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a213a89504
1446512 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Lee Jones
|
a213a89504 |
l2tp: pppol2tp: hold reference to session in pppol2tp_ioctl()
pppol2tp_ioctl() read sock->sk->sk_user_data directly without any
locks or reference counting. If a controllable sleep was induced during
copy_from_user() (e.g. via a userfaultfd page fault sleep), a concurrent
socket close could trigger pppol2tp_session_close() asynchronously. This
frees the l2tp_session structure via the l2tp_session_del_work workqueue.
Upon resuming, the ioctl thread dereferences the stale session pointer,
resulting in a Use-After-Free (UAF).
Fix this by securely fetching the session reference using the RCU-safe,
refcounted helper pppol2tp_sock_to_session(sk) on entry. This locks the
session's refcount across the sleep. We structured the function to exit
via standard err breaks, guaranteeing that l2tp_session_put() is cleanly
called on all return paths to drop the reference.
To preserve existing behavior we validate the session and its magic
signature only for the specific L2TP commands that require it. This
ensures that generic/unknown ioctls called on an unconnected socket
still return -ENOIOCTLCMD and correctly fall back to generic handlers
(e.g. in sock_do_ioctl()).
Signed-off-by: Lee Jones <lee@kernel.org>
Fixes:
|
||
|
Yizhou Zhao
|
2a58899d11 |
6lowpan: fix off-by-one in multicast context address compression
The second memcpy in lowpan_iphc_mcast_ctx_addr_compress() uses
&data[1] as destination and &ipaddr->s6_addr[11] as source, but
both should be offset by one: &data[2] and &ipaddr->s6_addr[12]
respectively.
This off-by-one has two consequences:
1. data[1] is overwritten with s6_addr[11], corrupting the RIID
field in the compressed multicast address
2. data[5] is never written, so uninitialized kernel stack memory
is transmitted over the network via lowpan_push_hc_data(),
leaking kernel stack contents
The correct inline data layout must match what the decompression
function lowpan_uncompress_multicast_ctx_daddr() expects:
data[0..1] = s6_addr[1..2] (flags/scope + RIID)
data[2..5] = s6_addr[12..15] (group ID)
Also zero-initialize the data array as a defensive measure against
similar bugs in the future.
Fixes:
|
||
|
Jamal Hadi Salim
|
5057e1aca0 |
net/sched: act_api: use RCU with deferred freeing for action lifecycle
When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and CPU1 running DELFILTER: 0: mutex_lock() <-- holds the idr lock 0: rcu_read_lock() 0: p = idr_find(idr, index) <-- action p is valid (RCU protects IDR) 0: mutex_unlock() <-- releases the idr lock 1: refcount_dec_and_mutex_lock() <-- refcnt 1->0, mutex held 1: idr_remove(idr, index) <-- Action removed from IDR 1: mutex_unlock() <-- mutex released allowing us to delete the action 1: tcf_action_cleanup(p); kfree(p) <-- Kfrees p immediately, no deferral 0: refcount_inc_not_zero(&p->tcfa_refcnt) <-- ouch, UAF p points to freed memory This patch fixes the race condition between NEWTFILTER and DELFILTER by adding struct rcu_head to tc_action used in the deferral and introducing a call_rcu() in the delete path to defer the final kfree(). Note: this is a revert of commit |
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|
Nikolay Kuratov
|
02896a7fa4 |
net/mlx5: Reorder completion before putting command entry in cmd_work_handler
Assuming callback != NULL && !page_queue, cmd_work_handler takes command entry with refcnt == 1 from mlx5_cmd_invoke. If either semaphore timeout or index allocation error happens, it does final cmd_ent_put(ent). To avoid access to freed memory, notify slotted completion before cmd_ent_put. This is theoretical issue found by Svace static analyser. Cc: stable@vger.kernel.org Fixes: |
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|
Linus Torvalds
|
f3be0c984e |
Quick follow up, nothing super urgent here. Main reason I'm sending
this out is because the IPsec and Bluetooth PRs did not make it
yesterday. I don't want to have to send you all of this + whatever
comes next week, for rc7. The fixes under "Previous releases -
regressions" are for real user-reported regressions from v7.0.
Previous releases - regressions:
- Revert "ipv6: preserve insertion order for same-scope addresses"
- xfrm: move policy_bydst RCU sync, a fix which added a sync RCU
on netns exit got backported to stable and was causing serious
accumulation of dying netns's for real workloads
- pcs-mtk-lynxi: fix bpi-r3 serdes configuration
Previous releases - always broken:
- usual grab bag of race, locking and leak fixes for Bluetooth
- handful of page handling fixes for IPsec
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-7.1-rc6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull more networking fixes from Jakub Kicinski:
"Quick follow up, nothing super urgent here. Main reason I'm sending
this out is because the IPsec and Bluetooth PRs did not make it
yesterday. I don't want to have to send you all of this + whatever
comes next week, for rc7. The fixes under "Previous releases -
regressions" are for real user-reported regressions from v7.0.
Previous releases - regressions:
- Revert "ipv6: preserve insertion order for same-scope addresses"
- xfrm: move policy_bydst RCU sync, a fix which added a sync RCU on
netns exit got backported to stable and was causing serious
accumulation of dying netns's for real workloads
- pcs-mtk-lynxi: fix bpi-r3 serdes configuration
Previous releases - always broken:
- usual grab bag of race, locking and leak fixes for Bluetooth
- handful of page handling fixes for IPsec"
* tag 'net-7.1-rc6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (36 commits)
wireguard: send: append trailer after expanding head
Revert "ipv6: preserve insertion order for same-scope addresses"
net: skbuff: fix pskb_carve leaking zcopy pages
ipv6: fix possible infinite loop in fib6_select_path()
ipv6: fix possible infinite loop in rt6_fill_node()
bpf: sockmap: fix tail fragment offset in bpf_msg_push_data
vsock/virtio: bind uarg before filling zerocopy skb
Revert "esp: fix page frag reference leak on skb_to_sgvec failure"
net: pcs: pcs-mtk-lynxi: fix bpi-r3 serdes configuration
sctp: fix race between sctp_wait_for_connect and peeloff
net: mana: Skip redundant detach on already-detached port
net: mana: Add NULL guards in teardown path to prevent panic on attach failure
Bluetooth: hci_sync: Reset device counters in hci_dev_close_sync()
Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close
Bluetooth: hci_core: Rework hci_dev_do_reset() to use hci_sync functions
Bluetooth: ISO: serialize iso_sock_clear_timer with socket lock
Bluetooth: ISO: fix UAF in iso_recv_frame
Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp
Bluetooth: l2cap: clear chan->ident on ECRED reconfiguration success
Bluetooth: hci_qca: Use 100 ms SSR delay for rampatch and NVM loading
...
|
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Linus Torvalds
|
77590cacab |
Clang build fixes for 7.1 #2
- Account for recently implemented -Wattribute-alias in clang by disabling it in the same places it is disabled for GCC. Signed-off-by: Nathan Chancellor <nathan@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQR74yXHMTGczQHYypIdayaRccAalgUCahnrhQAKCRAdayaRccAa loxRAP0dhAttt5Nzj1QVvVshp5gUdELM+zXD1qyXAY9Z81V3rgD8C867ax5pGAgO kV2PwaBK5P6FJ8joUz4m3qB20FXXYQs= =drMM -----END PGP SIGNATURE----- Merge tag 'clang-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nathan/linux Pull clang build fix from Nathan Chancellor: "A small fix to disable -Wattribute-alias for clang in the few places it is already disabled for GCC, now that tip of tree clang has implemented -Wattribute-alias as GCC has" * tag 'clang-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nathan/linux: Disable -Wattribute-alias for clang-23 and newer |
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|
Linus Torvalds
|
d0ee290071 |
Arm:
- Restore CONFIG_PKVM_DISABLE_STAGE2_ON_PANIC to its former glory by
making sure the config symbol is correctly spelled out in the code
- Don't reset the AArch32 view of the PMU counters to zero when the
guest is writing to them
- Fix an assorted collection of memory leaks in the newly added tracing
code
- Fix the capping of ZCR_EL2 which could be used in an unsanitised way
by an L2 guest
x86:
- Include the kernel's linux/mman.h in KVM selftests to ensure MADV_COLLAPSE
is defined, as older libc versions may not provide it.
- Include execinfo.h if and only if KVM selftests are building against glibc,
and provide a test_dump_stack() for non-glibc builds.
- Silence an annoying RCU splat on (even non-KVM-related) panics. The splat
is technically legit, but in practice not an issue. To have a race, you
would need to unload the KVM modules at exactly the time a panic happens;
and speaking of incredibly rare races, taking the locks risks introducing
a deadlock if the module unload code took the lock on a CPU that has been
halted. Which seems possibly more likely than the RCU grace period issue,
so just shut it up. This code used to be in KVM but is now outside it;
but the x86 maintainers haven't picked it up, so here we are.
- Rate-limit global clock updates once again (but without delayed work), as
KVM was subtly relying on the old rate-limiting for NPT correction to guard
against "update storms" when running without a master clock on systems with
overcommitted CPUs.
- Fix a brown paper bag goof where KVM checked if ERAPS is "dirty" instead of
marking it dirty when emulating INVPCID.
- Flush the TLB when transitioning from xAVIC => x2AVIC to ensure the CPU TLB
doesn't contain AVIC-tagged entries for the APIC base GPA.
- The top 10 commits fix buffer overflow (and potential TOC/TOU) flaws in the
page state change protocol for encrypted VMs. AI models find it quite
easily given it was reported three times, but aren't as good at writing
a comprehensive fix. There's more to clean up in the area, which will
come in 7.2.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"arm64:
- Restore CONFIG_PKVM_DISABLE_STAGE2_ON_PANIC to its former glory by
making sure the config symbol is correctly spelled out in the code
- Don't reset the AArch32 view of the PMU counters to zero when the
guest is writing to them
- Fix an assorted collection of memory leaks in the newly added
tracing code
- Fix the capping of ZCR_EL2 which could be used in an unsanitised
way by an L2 guest
x86:
- Include the kernel's linux/mman.h in KVM selftests to ensure
MADV_COLLAPSE is defined, as older libc versions may not provide
it.
- Include execinfo.h if and only if KVM selftests are building
against glibc, and provide a test_dump_stack() for non-glibc
builds.
- Silence an annoying RCU splat on (even non-KVM-related) panics.
The splat is technically legit, but in practice not an issue. To
have a race, you would need to unload the KVM modules at exactly
the time a panic happens; and speaking of incredibly rare races,
taking the locks risks introducing a deadlock if the module unload
code took the lock on a CPU that has been halted. Which seems
possibly more likely than the RCU grace period issue, so just shut
it up. This code used to be in KVM but is now outside it; but the
x86 maintainers haven't picked it up, so here we are.
- Rate-limit global clock updates once again (but without delayed
work), as KVM was subtly relying on the old rate-limiting for NPT
correction to guard against "update storms" when running without a
master clock on systems with overcommitted CPUs.
- Fix a brown paper bag goof where KVM checked if ERAPS is "dirty"
instead of marking it dirty when emulating INVPCID.
- Flush the TLB when transitioning from xAVIC => x2AVIC to ensure the
CPU TLB doesn't contain AVIC-tagged entries for the APIC base GPA.
- The top 10 commits fix buffer overflow (and potential TOC/TOU)
flaws in the page state change protocol for encrypted VMs. AI
models find it quite easily given it was reported three times, but
aren't as good at writing a comprehensive fix. There's more to
clean up in the area, which will come in 7.2"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (22 commits)
KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer
KVM: SEV: Check PSC request indices against the actual size of the buffer
KVM: SEV: Don't explicitly pass PSC buffer to snp_begin_psc()
KVM: SEV: WARN if KVM attempts to setup scratch area with min_len==0
KVM: SEV: Compute the correct max length of the in-GHCB scratch area
KVM: SEV: Use the size of the PSC header as the minimum size for PSC requests
KVM: SEV: Ignore Port I/O requests of length '0'
KVM: SEV: Reject MMIO requests larger than 8 bytes with GHCB v2+
KVM: SEV: Ignore MMIO requests of length '0'
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use
KVM: arm64: Correctly cap ZCR_EL2 provided by a guest hypervisor
KVM: arm64: Fix memory leak in hyp_trace_unload()
KVM: arm64: Fix rollback in hyp_trace_buffer_share_hyp()
KVM: arm64: Fix meta-page unsharing in pKVM hyp tracing
KVM: arm64: PMU: Preserve AArch32 counter low bits
KVM: SVM: Flush the current TLB when transitioning from xAVIC => x2AVIC
KVM: x86: Fix ERAPS RAP clear on INVPCID single-context invalidation
KVM: arm64: Fix CONFIG_PKVM_DISABLE_STAGE2_ON_PANIC
KVM: selftests: Guard execinfo.h inclusion for non-glibc builds
KVM: x86: Rate-limit global clock updates on vCPU load
...
|
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Jakub Kicinski
|
78ef59e7a6 |
Merge branch 'wireguard-fixes-for-7-1-rc6'
Jason A. Donenfeld says: ==================== WireGuard fixes for 7.1-rc6 Please find one small patch, fixing the order of adding padding onto a packet, to ensure padding bytes get zeroed properly. ==================== Link: https://patch.msgid.link/20260529173134.3080773-1-Jason@zx2c4.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Jason A. Donenfeld
|
f75e3eb08f |
wireguard: send: append trailer after expanding head
With how this is currently written, we add the trailer, zero it out, and
then add the header space on. If that header space requires a
reallocation + copy, the zeros in the trailer aren't copied, because the
skb len hasn't actually been yet expanded to cover that. Instead add the
padding at the end of the process rather than at the beginning.
Fixes:
|
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Fernando Fernandez Mancera
|
072aa0f5c3 |
Revert "ipv6: preserve insertion order for same-scope addresses"
Chris Adams reported that preserving insertion order for same-scope addresses is causing SSH connections to be dropped after stopping a VM while running NetworkManager. NetworkManager caches the IPv6 address configuration, when a RA arrives, it determines the list of addresses to configure and checks if the addresses are already in the right order in the kernel. If they aren't, NetworkManager removes and re-adds them to achieve the desired order. As the order changes, NetworkManager is confused and reconfigures the addresses on every update. In addition, this would also affect to cloud tooling that relies on IPv6 addresses order to identify primary and secondaries addresses. This reverts commit |
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Jakub Kicinski
|
c84ff04def |
ipsec-2026-05-29
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEH7ZpcWbFyOOp6OJbrB3Eaf9PW7cFAmoZWqgACgkQrB3Eaf9P W7cz1A//RDEq8pvp1kefBC6YLM9nAEpiIS+gdBWjUty/zC2bpuvWPnEaDKXeZVVx Vvo9ITV6BsgNsiUEOyM5ehsDknY9TZMFXSawQQWGiRZmGtP+wM3fesoklUDUz+QD JBaPg7JEcGjFXPlr1X+MF+bvPVfyPaf/s8VEcatFfkPVV2JZPiENwLmxq/ZV3LWF R5pB0Mz1AreRJQ3IZuUn8ae/UqUQ+GSP3VtI45lrNDWDBeVeP8zT3orm4Tv9ITYm doNvbXWYhZNlXUcP0qZ887G2Kn6dbrUbsdp0dOnQDAQu2NR0+tYQWxhoCN5Ps3zl OisDsNEp4aUzwFkwIE84E43rygD6wc7lx+BGgdFUM2FtmxRv7fUiIuvVuCtC87hv CsK0SueSgog5x3Ltx/P5O+hn80wKAUqPMESb/7Oxja0rUXi251E7WLVNJdgV0t2y OJMOMFm1uFwsckFBoSi54QNbJkFFK2lvdl+jQ068E7Cqf88LeqtNe56TOLr/Ut7I UnQakEDnOgzi1HHcpOs/hycyqvPgvBqhRI6IwAtZZFUzQ/i+usmLUIP4AhQRsA9u ffI/m+7uF4EJ4H+L/FxZds+AMGh28sL6a3muKpYgcHRJ/3bDPOGaL8NHyy+sTfFW U6GpFqjv2sEWZM8bCN1g7ymNg+70a/xeFwu6/38+X3cP7bg+QgE= =NQJ5 -----END PGP SIGNATURE----- Merge tag 'ipsec-2026-05-29' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== pull request (net): ipsec 2026-05-29 1) xfrm: route MIGRATE notifications to caller's netns Thread the caller's netns through km_migrate() so that MIGRATE notifications go to the issuing netns, fixing both the init_net listener leak and MOBIKE notifications inside non-init netns. From Maoyi Xie. 2) xfrm: ipcomp: Free destination pages on acomp errors Move the out_free_req label up so that allocated destination pages are released on decompression errors, not only on success. From Herbert Xu. 3) xfrm: Check for underflow in xfrm_state_mtu Reject configurations that cause xfrm_state_mtu() to underflow, preventing a negative TFCPAD value from becoming a memset size that triggers an out-of-bounds write of several terabytes. From David Ahern. 4) xfrm: ah: use skb_to_full_sk in async output callbacks Convert the possibly-incomplete skb->sk to a full socket pointer in async AH callbacks so that a request_sock or timewait_sock never reaches xfrm_output_resume() downstream consumers. From Michael Bommarito. 5) Add and revert: esp: fix page frag reference leak on skb_to_sgvec failure The patch does not fix te issue completely. 6) xfrm: esp: restore combined single-frag length gate Check the aligned post-trailer combined length against a page limit in the fast path, preventing skb_page_frag_refill() from falling back to a page too small for the destination scatterlist. From Jingguo Tan. 7) xfrm: iptfs: reset runtime state when cloning SAs Reinitialise the clone's mode_data runtime objects before publishing it, preventing queued skbs from being freed with list state copied from the original SA when migration fails. From Shaomin Chen. 8) xfrm: move policy_bydst RCU sync from per-netns .exit to .pre_exit Flush policy tables and drain the workqueue in a .pre_exit handler so that cleanup_net() pays one RCU grace period per batch instead of one per namespace, fixing stalls at high CLONE_NEWNET rates. From Usama Arif. 9) xfrm: input: hold netns during deferred transport reinjection Take a netns reference when queueing deferred transport reinjection work and drop it after the callback completes, keeping the skb->cb net pointer valid until the deferred work runs. From Zhengchuan Liang. * tag 'ipsec-2026-05-29' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec: Revert "esp: fix page frag reference leak on skb_to_sgvec failure" xfrm: input: hold netns during deferred transport reinjection xfrm: move policy_bydst RCU sync from per-netns .exit to .pre_exit xfrm: iptfs: reset runtime state when cloning SAs xfrm: esp: restore combined single-frag length gate esp: fix page frag reference leak on skb_to_sgvec failure xfrm: ah: use skb_to_full_sk in async output callbacks xfrm: Check for underflow in xfrm_state_mtu xfrm: ipcomp: Free destination pages on acomp errors xfrm: route MIGRATE notifications to caller's netns ==================== Link: https://patch.msgid.link/20260529092648.3878973-1-steffen.klassert@secunet.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Pavel Begunkov
|
ff6e798c2e |
net: skbuff: fix pskb_carve leaking zcopy pages
When SKBFL_MANAGED_FRAG_REFS is set, frag pages are not refcounted but
their lifetime is controlled by the attached ubuf_info. To make a copy
of the skb_shared_info, we either should clear the flag and reference
the frags, or keep the flag and have frags unreferenced.
pskb_carve_inside_header() and pskb_carve_inside_nonlinear() don't
follow the rule and thus can leak page references. Let's clear
SKBFL_MANAGED_FRAG_REFS from the original skb to fix it. It's the
simplest way to address it, but there are more performant ways to do
that if it ever becomes a problem.
Link: https://lore.kernel.org/all/20260523085809.26331-1-nvminh232@clc.fitus.edu.vn/
Fixes:
|
||
|
Jiayuan Chen
|
9c7da87c2d |
ipv6: fix possible infinite loop in fib6_select_path()
Found while auditing the same pattern Sashiko reported in rt6_fill_node() [1]. Apply the same fix as commit |
||
|
Jiayuan Chen
|
9f72412bcf |
ipv6: fix possible infinite loop in rt6_fill_node()
Sashiko reported this issue [1]. Apply the same fix as commit |
||
|
Yuqi Xu
|
f72eed9b84 |
bpf: sockmap: fix tail fragment offset in bpf_msg_push_data
When bpf_msg_push_data() inserts data in the middle of a scatterlist
entry, it splits the original entry into a left fragment and a right
fragment.
The right fragment offset is page-local, but the code advances it with
`start`, which is the message-global insertion point. For inserts into a
non-first SG entry, this over-advances the offset and leaves the split
layout inconsistent.
Advance the right fragment offset by the fragment-local delta,
`start - offset`, which matches the length removed from the front of the
original entry.
Fixes:
|
||
|
Jingguo Tan
|
1e584c304c |
vsock/virtio: bind uarg before filling zerocopy skb
virtio_transport_send_pkt_info() allocates or reuses the zerocopy uarg
before entering the send loop, but virtio_transport_alloc_skb() still
fills the skb before it inherits that uarg. When fixed-buffer vectored
zerocopy hits MAX_SKB_FRAGS, io_sg_from_iter() may partially attach
managed frags and return -EMSGSIZE. The rollback path call kfree_skb()
to free an skb that carries SKBFL_MANAGED_FRAG_REFS but no uarg, so
skb_release_data() falls through to ordinary frag unref.
Pass the uarg into virtio_transport_alloc_skb() and bind it immediately
before virtio_transport_fill_skb(). This keeps control or no-payload skbs
untouched while ensuring success and rollback share one lifetime rule.
Fixes:
|
||
|
Paolo Bonzini
|
713074d53b | Merge commit 'kvm-psc-for-7.1' into HEAD | ||
|
Sean Christopherson
|
c8cc238093 |
KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer
Use READ_ONCE() when reading entries/indices from the guest-accessible
Page State Change buffer to defend against TOCTOU bugs.
Don't bother with READ_ONCE()/WRITE_ONCE() for cases where KVM is writing
(and not consuming the result!), as the guest isn't supposed to touch the
buffer while it's being processed. I.e. using READ_ONCE() is all about
protecting against misbehaving guests.
Fixes:
|
||
|
Sean Christopherson
|
121d88de56 |
KVM: SEV: Check PSC request indices against the actual size of the buffer
When processing Page State Change (PSC) requests, validate the PSC buffer
against the effective size of the scratch area, which could be less than
the maximum size if the guest provided a pointer that isn't exactly at the
start of the GHCB shared buffer.
Fixes:
|
||
|
Sean Christopherson
|
ebe4b2dc9c |
KVM: SEV: Don't explicitly pass PSC buffer to snp_begin_psc()
Stop explicitly passing the PSC buffer to snp_begin_psc(): it *must* be the scratch area. This will allow fixing a variety of bugs without further complicating the code. No functional change intended. Cc: stable@vger.kernel.org Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Michael Roth <michael.roth@amd.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20260501202250.2115252-9-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
Sean Christopherson
|
f185e05dce |
KVM: SEV: WARN if KVM attempts to setup scratch area with min_len==0
Now that all paths in KVM properly validate the length needed for the scratch area, and are guaranteed to pass in a non-zero length, WARN if KVM attempts to configured the scratch area with min_len==0 to guard against future bugs. Cc: stable@vger.kernel.org Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Michael Roth <michael.roth@amd.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20260501202250.2115252-8-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
Sean Christopherson
|
5867d7e202 |
KVM: SEV: Compute the correct max length of the in-GHCB scratch area
When setting the length of the GHCB scratch area, and the area is in the
GHCB shared buffer, set the effective length of the scratch area to the max
possible size given the start of the guest-provided pointer, and the end of
the shared buffer.
The code was "fine" when first introduced, as KVM doesn't consult the
length of the buffer when emulating MMIO, because the passed in @len always
specifies the *max* size required. But for PSC requests, the incoming @len
is just the minimum length (to process the header), and KVM needs to know
the full size of the scratch area to avoid buffer overflows (spoiler alert).
Opportunistically rename @len => @min_len to better reflect its role.
Fixes:
|
||
|
Sean Christopherson
|
2be54670bd |
KVM: SEV: Use the size of the PSC header as the minimum size for PSC requests
When handling a Page State Change (PSC) #VMGEXIT use the size of the PSC
header as the minimum size for the scratch area. Per the GHCB spec, PSC
requests do NOT provide the length, i.e. using control->exit_info_2 for the
length is completely made up behavior. The existing code "works", e.g.
even though Linux-as-a-guest always passes '0', because KVM doesn't do
anything with the length when the request is in the GHCB's shared buffer.
Use the header as the min length. Once the header is retrieved, KVM can
use the specified indices to compute the full size of the request.
Fixes:
|
||
|
Sean Christopherson
|
3988bd2723 |
KVM: SEV: Ignore Port I/O requests of length '0'
Explicitly ignore Port I/O requests of length '0' (or count '0'), so that
setting up the software scratch area (and other code) doesn't have to
worry about underflowing the length, and to allow for WARNing on trying
to configure the scratch area with len==0.
Fixes:
|
||
|
Sean Christopherson
|
dcf1b2d4b0 |
KVM: SEV: Reject MMIO requests larger than 8 bytes with GHCB v2+
When using GHCB v2+, reject MMIO requests that are larger than 8 bytes.
Per the GHCB spec:
SW_EXITINFO2 must be less than or equal to 0x7fffffff for version 1 and
less than or equal to 0x8 for all other versions.
Fixes:
|
||
|
Sean Christopherson
|
1aa8a6dc7d |
KVM: SEV: Ignore MMIO requests of length '0'
Explicitly ignore MMIO requests of length '0', so that setting up the
software scratch area (and other code) doesn't have to worry about
underflowing the length, and to allow for special casing '0' in the
future.
Fixes:
|
||
|
Michael Roth
|
db3f2195d2 |
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use
As per the GHCB spec, when using GHCB v2+ require the software scratch area
to reside in the GHCB's shared buffer. Note, things like Page State Change
(PSC) requests _rely_ on this behavior, as the guest can't provide a length
when making the request, i.e. the size of the guest payload is bounded by
the size of the shared buffer.
Failure to force usage of the GHCB, and a slew of other flaws, lets a
malicious SNP guest corrupt host kernel heap memory, and leak host heap
layout information.
setup_vmgexit_scratch() allocates a buffer via kvzalloc(exit_info_2),
where exit_info_2 is guest-controlled. With exit_info_2=24, this yields
a 24-byte allocation in kmalloc-cg-32 (32-byte slab objects). The buffer
holds an 8-byte psc_hdr followed by 8-byte psc_entry structs, so only
entries[0] and entries[1] are in-bounds.
snp_begin_psc() validates end_entry against VMGEXIT_PSC_MAX_COUNT (253)
but NOT against the actual buffer size:
idx_end = hdr->end_entry;
if (idx_end >= VMGEXIT_PSC_MAX_COUNT) { // checks 253, not buffer
snp_complete_psc(svm, ...);
return 1;
}
for (idx = idx_start; idx <= idx_end; idx++) {
entry_start = entries[idx]; // OOB when idx >= 2
The guest sets end_entry=10+, causing the host to iterate entries[2+]
which are OOB into adjacent slab objects. For each OOB entry:
- The host reads 8 bytes (OOB READ / info leak oracle)
- If the data passes PSC validation, __snp_complete_one_psc() writes
cur_page = 1 or 512 into the entry (OOB WRITE, sev.c:3806)
- If validation fails, the error response reveals whether adjacent
memory is zero vs non-zero (information disclosure to guest)
The guest controls allocation size (exit_info_2), entry range
(cur_entry/end_entry), and can fire unlimited VMGEXITs to repeatedly
hit different slab positions.
By exploiting the variety of bugs, a malicious SEV-SNP guest can:
- OOB read adjacent kmalloc-cg-32 objects (heap layout disclosure)
- OOB write cur_page bits into adjacent objects (heap corruption)
- Trigger use-after-free conditions across VMGEXITs
E.g. with KASAN enabled, a single insmod of the PoC guest module
produces 73 KASAN reports:
BUG: KASAN: slab-out-of-bounds in snp_begin_psc+0x126/0x890
Read of size 8 at addr ffff888219ffb5e0 by task qemu-system-x86/2199
BUG: KASAN: slab-out-of-bounds in snp_begin_psc+0x468/0x890
Write of size 8 at addr ffff888351566648 by task qemu-system-x86/2199
The buggy address belongs to the object at ffff888XXXXXXXXX
which belongs to the cache kmalloc-cg-32 of size 32
The buggy address is located N bytes to the right of
allocated 32-byte region [ffff888XXXXXXXXX, ffff888XXXXXXXXX)
Breakdown:
62 slab-out-of-bounds (reads + writes past allocation)
7 slab-use-after-free
4 use-after-free
All credit to Stan for the wonderful description and reproducer!
Reported-by: Stan Shaw <shawstan96@gmail.com>
Cc: Michael Roth <michael.roth@amd.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Peter Gonda <pgonda@google.com>
Cc: Jacky Li <jackyli@google.com>
Fixes:
|
||
|
Linus Torvalds
|
9215e74f22 |
block-7.1-20260529
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmoZxo8QHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgplONEADDu3cC/oIuivuKb/vW1x9Gy+heRkbV7PKQ AqpvdsOODmFko9wbZ5Jzydiq1gqNoBIenl0rAD/lQAeWz6o1iR8cFWL6vTVCAwUl nUUXW8189e/LffwgjoEHHQfKImUuNNYfNsbQCStUI2jPQNaxbOOQtlkg+EkiyCm1 E54ENp+qX18dsor7PlChzFdBU53Y5LFnJAivGpE/Pp0XfBjoNPiqIehYaPXidxws XXl0mLGFOcxNgQ8C8pmo5koSI9KjLR4qLXT7dP44d+liwu9nIoLxHBn5050TNAw8 8p0mTl3oEdsIl3YJmzmlHCRGBWnHxxbMmTVFPRsn6sWKyGgZNfEfr/8vwTHo4T/+ uofPR21fUTzmEVFbSWa9h709DJguSQx0zCLex/MrUa4jY1k26RY2R1IfakFRs6xF RA9LNnjjoHhuzb6cCe4ZKTANXajgsUSg4p1n5+d/0cBAekGEWkWMGxPMe4snRkdu aW+1RVrzJeUkFBS2pLRjCg/Y376TD4M6Lg4r7xReP0dJQP5KihIp+Hg2aCS1tMQP erIFcuvTjbSoAKw5FyGi/mACScZKMml/bnaMkQQNrYIW4CZXN473DHcfEu7DQhjY S1VK4SGwTOoktqLFM5vXA5yNv3qaUyOjB/JR11P+twaDjug75oEvS0NCnXqvyXfe SzznzpjEVg== =YY45 -----END PGP SIGNATURE----- Merge tag 'block-7.1-20260529' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux Pull block fix from Jens Axboe: "Just a single fix for the block side, making a slight tweak to a fix from this cycle" * tag 'block-7.1-20260529' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: blk-mq: reinsert cached request to the list |
||
|
Linus Torvalds
|
80169db922 |
io_uring-7.1-20260529
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||
|
Paolo Bonzini
|
5ff17b1958 |
KVM/arm64 fixes for 7.1, take #4
- Restore CONFIG_PKVM_DISABLE_STAGE2_ON_PANIC to its former glory by making sure the config symbol is correctly spelled out in the code - Don't reset the AArch32 view of the PMU counters to zero when the guest is writing to them - Fix an assorted collection of memory leaks in the newly added tracing code - Fix the capping of ZCR_EL2 which could be used in an unsanitised way by an L2 guest -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAmoZbFAACgkQI9DQutE9 ekMqHA/+MUfOMP8C8q87SVWsb8JrtMoZKBl6YWsn19kSGXkR14HVTLwmTWsYCNfi KvuOf5p0ALvCt9KhE8EUpsIScwdcLMJWjwKbzKkgooX9YwlgMLxA5w3He6GgyTzB 0fCqQ/2H/frJP1kdQI567Zc4eO7JNcMJfI+/lrZxUM6xbo0KyhehQcFlTBVm5/h/ RptX9n1NqdJ1qqbJw7UkAAt0hDMIAvDxZyTKGYTQla/+ckK+UEa6UUl/1pfXPs6Y Domxu7OO9qQFSxR3KfFlHEml4lrLxNTiCFzoBgPCrf83vAkK0Ceudj3luCs7UDMX j4sH44ddHDoO/8BmueNzsQ+gHTqmDaQGRu3G8m/4EN0dCnD5TsQ9FtaB7LErRFze wZCTxiAuAxAaQC41H/Nul3S+7D92/vRW664b7HPf92uvD4QpGA96qvafnz9SK8AN CyiB4EBElau+D4nOBJ7MO9vu0doWwnTXRHSIvJv8mRkkYedhEv9G8OX8QOgLGi2r /uYtMYRcZ6tglvVhQzcOwpHe//oJ7CGxfACgwUhH2XjL1V3tDuCtCfQheo242UAe nBUfs1R38UyaWKZmlkzymHygAprw2s/idAIJV7i80rDGwAuNTdMV3SyjC1so7ZGP 1grcr7yi2aPr3phA1RWD5bbGZhTl8a+fzyKrwIltz3rTAaV7lOk= =bNQ/ -----END PGP SIGNATURE----- Merge tag 'kvmarm-fixes-7.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 fixes for 7.1, take #4 - Restore CONFIG_PKVM_DISABLE_STAGE2_ON_PANIC to its former glory by making sure the config symbol is correctly spelled out in the code - Don't reset the AArch32 view of the PMU counters to zero when the guest is writing to them - Fix an assorted collection of memory leaks in the newly added tracing code - Fix the capping of ZCR_EL2 which could be used in an unsanitised way by an L2 guest |
||
|
Paolo Bonzini
|
b397897016 |
KVM x86 fixes for 7.1-rcN
- Include the kernel's linux/mman.h in KVM selftests to ensure MADV_COLLAPSE
is defined, as older libc versions may not provide it.
- Include execinfo.h if and only if KVM selftests are building against glibc,
and provide a test_dump_stack() for non-glibc builds.
- Fudge around an RCU splat in the emegerncy reboot code that is technically
a legitimate flaw, but in practice is a non-issue and fixing the flaw, e.g.
by adding locking, would incur meaningful risk, i.e. do more harm than good.
- Rate-limit global clock updates once again (but without delayed work), as
KVM was subtly relying on the old rate-limiting for NPT correction to guard
against "update storms" when running without a master clock on systems with
overcommitted CPUs.
- Fix a brown paper bag goof where KVM checked if ERAPS is "dirty" instead of
marking it dirty when emulating INVPCID.
- Flush the TLB when transitioning from xAVIC => x2AVIC to ensure the CPU TLB
doesn't contain AVIC-tagged entries for the APIC base GPA.
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Merge tag 'kvm-x86-fixes-7.1-rc6' of https://github.com/kvm-x86/linux into HEAD
KVM x86 fixes for 7.1-rcN
- Include the kernel's linux/mman.h in KVM selftests to ensure MADV_COLLAPSE
is defined, as older libc versions may not provide it.
- Include execinfo.h if and only if KVM selftests are building against glibc,
and provide a test_dump_stack() for non-glibc builds.
- Fudge around an RCU splat in the emegerncy reboot code that is technically
a legitimate flaw, but in practice is a non-issue and fixing the flaw, e.g.
by adding locking, would incur meaningful risk, i.e. do more harm than good.
- Rate-limit global clock updates once again (but without delayed work), as
KVM was subtly relying on the old rate-limiting for NPT correction to guard
against "update storms" when running without a master clock on systems with
overcommitted CPUs.
- Fix a brown paper bag goof where KVM checked if ERAPS is "dirty" instead of
marking it dirty when emulating INVPCID.
- Flush the TLB when transitioning from xAVIC => x2AVIC to ensure the CPU TLB
doesn't contain AVIC-tagged entries for the APIC base GPA.
|
||
|
Linus Torvalds
|
3101173200 |
cxl fixes for v7.1-rc6
cxl/test: Update mock dev array before calling platform_device_add() -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5DAy15EJMCV1R6v9YGjFFmlTOEoFAmoZsZYACgkQYGjFFmlT OEqWGQ//dw5RvgcSxTF9+bUE/kyBJD37UfsmUXMAbC8AhVbBgQsXaWUM72azi/s2 Ht+lYgQbtyGC5RmK+A0GCOLh6UtYP3WW49eii7otbJUafdbXHwNiTxdkUXCqX2Mn voE5Sw8bClNq3g2dIQuXDAPi0AFYzpMpvqjyzB8v1BzxqrFCZm8IUIubjcPwsan1 E6vQZ0arAGBqgWsbYyOkvWHHyhKIp7ymI2yQ8xljjoPeqHvcVbpFeJUSwS1XDh0d HciWK0VQZhRvonP5xM7lJLN5RMIBXBnPk98LWQO4xgmxuKOxVkxapsHY2yfrzkE3 PFqlVgddPN/wT3XgPXP/1B2TvqqPJEUHImU8YlMNL3PT6IJhhyNcf5qbvr29rdSq T2ysQCDrBZDXe4FqvVc02JkUuY9/yJ83Z4CY6iTRCSUIuAMk5dL0Y4dOA/O1hLbc fnxbbj0bV9tgpjt2bOyPqcs/3p7eRkteJHJ8FoCyZFBdGk2hROoyD3vvCH8DI10/ kZ/ZUnLuBYxRIDwSIbv9yIsTKHz9eO58gBrf3zEm/1HuWY0e4R4CCllGKrwiBJ89 Q+TpJwCWQ7nwyf5uhI3WK2dAAZO22U+rW1noGLbbRTDX66HSFVk1dUXqPw9p7V4R AiaJksa0apPSp69wiVeBy2rVZz3lxSnRlvCvKra7qZ26N45iqFw= =a0MQ -----END PGP SIGNATURE----- Merge tag 'cxl-fixes-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull Compute Express Link (CXL) fixes from Dave Jiang: - cxl/test: update mock dev array before calling platform_device_add() * tag 'cxl-fixes-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: cxl/test: Update mock dev array before calling platform_device_add() |
||
|
Linus Torvalds
|
b0ab604210 |
IOMMU Fixes for Linux v7.1-rc5
Including: - Fix compile warning with gcc-16.1 - Intel VT-d: Simplify calculate_psi_aligned_address() - MAINTAINERS updates -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEr9jSbILcajRFYWYyK/BELZcBGuMFAmoZc8cACgkQK/BELZcB GuMbLw/9GslX8hEm6d/x71pZXIC5T/xqwnnMI7C8QjFSjwcIpKI9tAidKTQsC8cu j7QWrT++/yx3gpnWjyBpv/ISpQlUOTy7/ynU/YecdKBLATHRD323NAbNErNmwznJ 2re6GuUCNGKcKTEJ7ZUABEKrQW1BFqZf0X4/pT4kFjvJBJQ+HFeRp/bimQrPltbR Bv9zi8BVyiPCzfHpII2MKinp39z/Ia1+fC7o4QV7LLvlVegbrtmNy42Fu9+29a0X 3TlnfFPJ3JNXpOjY12o3FoClONxvEiu81P7zKQSRJUiieEK8x4NoejyPocR1DghR Hxfa+l+JLV134su/PxZxQEB+gZJLU9aodz/sFAlWyVaQRBZESSPzxmc4pB9q2IZ/ 3XAl5rYH02lvKthsgyHfoEmn4DnIK7q0PFy43Z0bzDSdUbIgNG9cKtz+tjssZXI8 peSMFFVWGslj9tasfFI7H4LPtfx32HqTRNymcKLu/eBOQNvut7lxLL8X40jxcHX1 p8ernQaEyW4bObq4tQbYfvBc0Hub4tA39TCPX215SzDYqpNO4GcSmdG6ixUSfMrI lERjhPvqq9YEVrPU5Qu3c/ULZuaknOWJW435DDkwcsFceqO7AxO6zk5Vh2PD7hIp yEDP+LNbdu/9glFmlBNlw1XHKDzvNPC+tzKehQh3obtR8v5nGPo= =UwDK -----END PGP SIGNATURE----- Merge tag 'iommu-fixes-v7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux Pull iommu fixes from Joerg Roedel: - Fix compile warning with gcc-16.1 - Intel VT-d: Simplify calculate_psi_aligned_address() - MAINTAINERS updates * tag 'iommu-fixes-v7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: MAINTAINERS: Add my employer to my entries MAINTAINERS: Add Vasant Hegde to reviewers of AMD IOMMU iommu, debugobjects: avoid gcc-16.1 section mismatch warnings iommu/vt-d: Simplify calculate_psi_aligned_address() |
||
|
Linus Torvalds
|
7b55445960 |
sound fixes for 7.1-rc6
A collection of recent small fixes and quirks. We still see a bit more changes than wished, but most of them are device-specific ones that are pretty safe to apply, while a core fix is a typical UAF fix for PCM core that was recently caught by fuzzer; so overall nothing looks really worrisome. * Core: - Fix a UAF in PCM OSS proc interface * HD-audio: - Fix memory leaks in CS35L56 driver - Various device-specific quirks for Realtek and CS420x codecs * USB-audio: - Quirk for TAE1160 USB Audio - Fix for Scarlett2 Gen4 direct monitor gain * ASoC: - Fixes for QCom q6asm-dai, Intel bytcht_es8316, and simple-mux codec * FireWire: - Fix for Motu DSP event queue protection -----BEGIN PGP SIGNATURE----- iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmoZTLUOHHRpd2FpQHN1 c2UuZGUACgkQLtJE4w1nLE8RMxAAmdvBYW7xB64onopKCTjdHewCx3nsK9V9jiWi 0xsQDEs1+JukXG4Bag06R2W9EJLrdFewa88QnuwtEG+wMxJO30oJxm/b6k5EkwNu ai8Vd8pFkcxmpAC7cL/ROtQurqW9Tfr+w9qGUTcS12tRuvQV+AjfHvGSlwqiS3K0 ZFPozyPVD6kQ5g3io/GH3HW76ZTLB+jtVx+VYvQsJ43Bii3g2pfNW6HlWQyundPt Q6vLgUHEhvf9fgA76YztQedtoxBxQyuWrZCOV2+qzobW5sJHdOAlh4XmR6VjYzui Gp6Xn4U1wPsP722kqzm+uK6QDVsaGGzKOuwKWYpGBwRYVol0CY/YFC1ZcT19VCMI k6J93OMYZRoAl+ECbbWQjhVN4g8Ut7CQlvcZpPVwr5+HgcoitvuBt41KGUesKFkp 0h8kgy/X59JCJJ+AaZlxKOKoPL+WeVCXm1z9GF3VcS1h9kT1ZXfB1d3nSi9383xR ho+YJYQQiyvXK7ZfESKZgChmC9LBSU5joW77HslXU5tM9ZkLGW1w8O7Zasas7cSm xeNhhR6J3AnfTLX2XHDKWR/w32kqaEYTUr+t1Z997Vm33D7idcOtQIr20AgQon+0 EfKLijHFQB0HCkqgndMXdgjnus9TnXOoJE9aQudRr8rSUgu3dONrPguv+z23y25n 9u7awX4= =IHLg -----END PGP SIGNATURE----- Merge tag 'sound-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "A collection of recent small fixes and quirks. We still see a bit more changes than wished, but most of them are device-specific ones that are pretty safe to apply, while a core fix is a typical UAF fix for PCM core that was recently caught by fuzzer; so overall nothing looks really worrisome. Core: - Fix a UAF in PCM OSS proc interface HD-audio: - Fix memory leaks in CS35L56 driver - Various device-specific quirks for Realtek and CS420x codecs USB-audio: - Quirk for TAE1160 USB Audio - Fix for Scarlett2 Gen4 direct monitor gain ASoC: - Fixes for QCom q6asm-dai, Intel bytcht_es8316, and simple-mux codec FireWire: - Fix for Motu DSP event queue protection" * tag 'sound-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ASoC: codecs: simple-mux: Fix enum control bounds check ALSA: usb-audio: Add iface reset and delay quirk for TAE1160 USB Audio ALSA: hda/cs420x: Add CS4208 fixup for iMac16,1 ALSA: hda/realtek: add quirk for HP Dragonfly Folio G3 2-in-1 ALSA: hda/realtek: Fix speaker output on ASUS ROG Strix G615LP ASoC: qcom: q6asm-dai: use pointer type with kzalloc_obj() ASoC: qcom: q6asm-dai: remove unnecessary braces ASoC: qcom: q6asm-dai: fix error handling in prepare and set_params ASoC: qcom: q6asm-dai: close stream only when running ASoC: qcom: q6asm-dai: do not set stream state in event and trigger callbacks ASoC: Intel: bytcht_es8316: Fix MCLK leak on init errors ALSA: hda/realtek: Limit mic boost on Positivo DN140 ALSA: scarlett2: Fix 2i2 Gen 4 direct monitor gain on firmware 2417 ALSA: pcm: oss: Fix setup list UAF on proc write error ALSA: hda: cs35l56: Fix system name string leaks ALSA: hda/realtek: Add HDA_CODEC_QUIRK for Lenovo Yoga Slim 7 14AGP11 ALSA: hda/realtek: Fix incorrect comment for ALC299_FIXUP_PREDATOR_SPK ALSA: firewire-motu: Protect register DSP event queue positions |
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|
Linus Torvalds
|
e6f4f084ec |
hid-for-linus-2026052801
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEoEVH9lhNrxiMPSyI7MXwXhnZSjYFAmoYZ3EACgkQ7MXwXhnZ SjY8QQ/8DjopbIJ9mJzOLRRzCyKf/+JthOL48Vg7lu7uftRkgZ/IfOp9n7dWguG2 yiOI2/yyQDL3wsd3DoUEtMwTPhd/JNpc7qJ+N19l/tpcnup+PaDxpiZWD1k1zKz6 cNROdNtGKyBlSl80qWNDN65u/AkEv7QTcvZS2Nw/Kh+0jmiOf/FqplyjNwHXsDsi VCSfkpAAPz3zaHaJcaWMMImV/s6MOwVAI+2PlO/Kbgv62BrzGXTJBdiWK2LIbxPh Udo/fXwnX/I/SuQ+j5IGRMJOokbWXugyKnstpDIv/1brVEmrTzp0CB0yoKGNTjy0 S8/ZYJBsnCAXMA9pcpzM86jtB2yrA/HHwtOo+mH2AD3z9r25qHTiWbTh9/tnSAiW MYNcwvpbgvFHmwWrjpt7jrndlFhbXT2fHjyMZg3j9tmisXZCqwmU972J1jXTb8wL xjhkKJFjjgTkRwXXx3BP51I+W+15P1DKhsAOqJS2K19At5dgZTD5KY6wQXkDVbk7 c+o9Duq7PoBGzHz/gl1Z2nqA5KEgP17HQIAhM+HEjvrmOscnKpGdHLTpMSwqyKhF e/4yLeZdpvn6KB/B1fXYIPhTAmjKI2JxNNsae4ir7m7S6HxwamXZ406A05NoCGIQ XDm3B1xDYcS4NYKE9G6oO5+HcanZD1QBAJBa5k8COTyIQ42svnY= =pFq/ -----END PGP SIGNATURE----- Merge tag 'hid-for-linus-2026052801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid Pull HID fixes from Benjamin Tissoires: - buffer overflow fix for lenovo (Kean) and wacom (Lee Jones) drivers - segfaults prevention in lenovo-go driver when used with an emulated device (Louis Clinckx) - cleanup of resources in u2fzero (Myeonghun Pak) - a quirk for a USB mouse and a cleanup in hid.h (hlleng and Liu Kai) * tag 'hid-for-linus-2026052801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: wacom: Fix OOB write in wacom_hid_set_device_mode() HID: lenovo-go: drop dead NULL check on to_usb_interface() HID: lenovo-go: reject non-USB transports in probe HID: lenovo: Fix buffer over-read and unaligned access in X12 Tab raw_event handler HID: quirks: Add ALWAYS_POLL quirk for SIGMACHIP USB mouse HID: remove duplicate hid_warn_ratelimited definition HID: u2fzero: free allocated URB on probe errors |
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Mark Brown
|
8372633074 |
KVM: arm64: Correctly cap ZCR_EL2 provided by a guest hypervisor
ZCR_EL2 can be updated by a VHE guest hypervisor either using ZCR_EL2
(which traps) or ZCR_EL1 (which does not trap). KVM handles both in
different way:
- on ZCR_EL2 trap, ZCR_EL2.LEN is immediately capped at the VM's own
VL limit. This has the potential to break existing SW that relies
on the full LEN field to be stateful.
- on ZCR_EL1 access, we do absolutely nothing.
On restoring the SVE context for an L2 guest, we directly restore the
guest hypervisor's view of ZCR_EL2 into the physical ZCR_EL2. If the
guest's view of the register was updated using the ZCR_EL2 accessor,
the value has already been sanitised (with the caveat mentioned above).
But if the guest used ZCR_EL1, the raw value is written into the HW,
and the L2 guest can now access VLs that it shouldn't.
Fix all the above by moving the VL capping to the restore points,
ensuring that:
- the HW is always programmed with a capped value, irrespective of
the accessor being used,
- the ZCR_EL2.LEN field is always completely stateful, irrespective
of the accessor being used.
Additionally, move ZCR_EL2 to be a sanitised register, ensuring that
only the LEN field is actually stateful. This requires some creative
construction of the RES0 mask, as the sysreg generation script does
not yet generate RAZ/WI fields.
Fixes:
|
||
|
Steffen Klassert
|
6851161feb |
Revert "esp: fix page frag reference leak on skb_to_sgvec failure"
This reverts commit
|
||
|
Frank Wunderlich
|
422b5233b6 |
net: pcs: pcs-mtk-lynxi: fix bpi-r3 serdes configuration
Commit |
||
|
Jakub Kicinski
|
2412591cfe |
bluetooth pull request for net:
- hci_core: Rework hci_dev_do_reset() to use hci_sync functions - hci_conn: Fix memory leak in hci_le_big_terminate() - hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close - hci_sync: Reset device counters in hci_dev_close_sync() - hci_sync: fix UAF in hci_le_create_cis_sync - L2CAP: Fix possible crash on l2cap_ecred_conn_rsp - L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn - L2CAP: use chan timer to close channels in cleanup_listen() - L2CAP: clear chan->ident on ECRED reconfiguration success - ISO: fix UAF in iso_recv_frame - ISO: serialize iso_sock_clear_timer with socket lock - HIDP: fix missing length checks in hidp_input_report() - 6lowpan: check skb_clone() return value in send_mcast_pkt() - btusb: Allow firmware re-download when version matches - hci_qca: Use 100 ms SSR delay for rampatch and NVM loading -----BEGIN PGP SIGNATURE----- iQJNBAABCgA3FiEE7E6oRXp8w05ovYr/9JCA4xAyCykFAmoYP6oZHGx1aXoudm9u LmRlbnR6QGludGVsLmNvbQAKCRD0kIDjEDILKX9SD/9+09g+LpkrBUyTsqaMiWii 4BNwbGG1kTzof/3pxmjxsJNbOi1u7wpA6gyGo9Opaaz3IjE5ZYnwblhSCjf7i0Qz Txl8p5DPmTBHBevZLDA0OrTtxAtNKlOzGQLs/nrWikHvEBy0F20e5defcv9IMaAy XAyv++EyZFznqwGU0iV2avXF4Gnfs6F1WL5f42jl0zwahB3pKZZik1HYOkg9JsIm 9/6qlBStf4VxATF+vN5OqY9K6xV2bPVC/htoBP4oMUbaDXbgZgDoTYScyvBOktBZ DenyFzWogGKRWrOxgWA9RYnQ0VU+Orx0C5gf+DLbUY2uMGMlEwVAOBUUbDUsgsz8 m97hfJamNcpVv9+40v8QfYc1gF+k5OYQx1UCAvRSdmnkdycukeZXfScwx/35jHqj BFExP7b5UtphUfjUiP/nEqZogiV4HXPoWF+X4Wnoe80dNhX0JGsjBjlBc6Da4ZOF zdn9l+Qc/OvaMJV2OZIHFu28BBpgBAp+ujOhMRtlvSgvi1XUkf1InFEWdIg+NpiE 8JOD63huNXeGzKLhwyMfIQ8zsMNwQpn+gnE4vqHal6GhYhAMhSBtJxLBAdc8aZQR 91SFDl96ghNrRXfQlWfN7g2TdTZKCUzD5ZmOl1s/iv1rqENYA6WCwLXHe/6I03mT hpx6ALMEjS8qud43JFfOOg== =7Nv9 -----END PGP SIGNATURE----- Merge tag 'for-net-2026-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth Luiz Augusto von Dentz says: ==================== bluetooth pull request for net: - hci_core: Rework hci_dev_do_reset() to use hci_sync functions - hci_conn: Fix memory leak in hci_le_big_terminate() - hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close - hci_sync: Reset device counters in hci_dev_close_sync() - hci_sync: fix UAF in hci_le_create_cis_sync - L2CAP: Fix possible crash on l2cap_ecred_conn_rsp - L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn - L2CAP: use chan timer to close channels in cleanup_listen() - L2CAP: clear chan->ident on ECRED reconfiguration success - ISO: fix UAF in iso_recv_frame - ISO: serialize iso_sock_clear_timer with socket lock - HIDP: fix missing length checks in hidp_input_report() - 6lowpan: check skb_clone() return value in send_mcast_pkt() - btusb: Allow firmware re-download when version matches - hci_qca: Use 100 ms SSR delay for rampatch and NVM loading * tag 'for-net-2026-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth: Bluetooth: hci_sync: Reset device counters in hci_dev_close_sync() Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close Bluetooth: hci_core: Rework hci_dev_do_reset() to use hci_sync functions Bluetooth: ISO: serialize iso_sock_clear_timer with socket lock Bluetooth: ISO: fix UAF in iso_recv_frame Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp Bluetooth: l2cap: clear chan->ident on ECRED reconfiguration success Bluetooth: hci_qca: Use 100 ms SSR delay for rampatch and NVM loading Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync Bluetooth: 6lowpan: check skb_clone() return value in send_mcast_pkt() Bluetooth: btusb: Allow firmware re-download when version matches Bluetooth: HIDP: fix missing length checks in hidp_input_report() Bluetooth: L2CAP: use chan timer to close channels in cleanup_listen() Bluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate() ==================== Link: https://patch.msgid.link/20260528131839.462344-1-luiz.dentz@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Zhenghang Xiao
|
f14fe6395a |
sctp: fix race between sctp_wait_for_connect and peeloff
sctp_wait_for_connect() drops and re-acquires the socket lock while
waiting for the association to reach ESTABLISHED state. During this
window, another thread can peeloff the association to a new socket via
getsockopt(SCTP_SOCKOPT_PEELOFF), changing asoc->base.sk. After
re-acquiring the old socket lock, sctp_wait_for_connect() returns
success without noticing the migration — the caller then accesses
the association under the wrong lock in sctp_datamsg_from_user().
Add the same sk != asoc->base.sk check that sctp_wait_for_sndbuf()
already has, returning an error if the association was migrated while
we slept.
Fixes:
|
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Jakub Kicinski
|
ab4ac5a93b |
Merge branch 'net-mana-fix-null-dereferences-during-teardown-after-attach-failure'
Dipayaan Roy says: ==================== net: mana: Fix NULL dereferences during teardown after attach failure When mana_attach() fails (e.g. during queue allocation), the error cleanup frees apc->tx_qp and apc->rxqs and sets them to NULL. Multiple subsequent teardown paths can then dereference these NULL pointers, causing kernel panics. Patch 1 adds NULL guards in the low-level teardown functions (mana_fence_rqs, mana_destroy_vport, mana_dealloc_queues) so they are safe to call regardless of queue initialization state. This covers all callers: mana_remove(), mana_change_mtu() recovery, and internal error paths in mana_alloc_queues(). Patch 2 adds an early exit in mana_detach() for already-detached ports, making it safe for non-close callers. This allows the queue reset handler to safely retry mana_attach() without redundant teardown. ==================== Link: https://patch.msgid.link/20260525081129.1230035-1-dipayanroy@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Dipayaan Roy
|
5b05aa36ee |
net: mana: Skip redundant detach on already-detached port
When mana_per_port_queue_reset_work_handler() runs after a previous
detach succeeded but attach failed, the port is left in a detached
state with apc->tx_qp and apc->rxqs already freed. Calling
mana_detach() again unconditionally leads to NULL pointer dereferences
during queue teardown.
Add an early exit in mana_detach() when the port is already in
detached state (!netif_device_present) for non-close callers, making
it safe to call idempotently. This allows the queue reset handler and
other recovery paths to simply retry mana_attach() without redundant
teardown.
Fixes:
|
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|
Dipayaan Roy
|
17bfe0a8c0 |
net: mana: Add NULL guards in teardown path to prevent panic on attach failure
When queue allocation fails partway through, the error cleanup frees
and NULLs apc->tx_qp and apc->rxqs. Multiple teardown paths such as
mana_remove(), mana_change_mtu() recovery, and internal error handling
in mana_alloc_queues() can subsequently call into functions that
dereference these pointers without NULL checks:
- mana_chn_setxdp() dereferences apc->rxqs[0], causing a NULL pointer
dereference panic (CR2: 0000000000000000 at mana_chn_setxdp+0x26).
- mana_destroy_vport() iterates apc->rxqs without a NULL check.
- mana_fence_rqs() iterates apc->rxqs without a NULL check.
- mana_dealloc_queues() iterates apc->tx_qp without a NULL check.
Add NULL guards for apc->rxqs in mana_fence_rqs(),
mana_destroy_vport(), and before the mana_chn_setxdp() call. Add a
NULL guard for apc->tx_qp in mana_dealloc_queues() to skip TX queue
draining when TX queues were never allocated or already freed.
Fixes:
|
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|
Linus Torvalds
|
8fde5d1d47 |
ACPI support fixes for 7.1-rc6
Fix three issues in the ACPI button driver: a possible crash due to a button press after unloading the driver (introduced during the 6.15 development cycle), function keys breakage on Toshiba Tecra X40 due to missing ACPI events (introduced during the 7.0 development cycle), and a missing probe rollback path item that has not been added by mistake during a recent update. -----BEGIN PGP SIGNATURE----- iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmoYhl8SHHJqd0Byand5 c29ja2kubmV0AAoJEO5fvZ0v1OO1mfsH/A4/8aBIuxemIAoyoAQwwjQGoIkdhDDV vyHBpOxzXwlOB0dCi/vuVdkMX+ADt2/0roh82mnXRiIv47CF/ePrQSnLiIvtN32b cY7xbSN8n7d2Vjp5k3cWBU/CL1tCGq6c/DEnFzMwtzhkt7qCuaDDfedqjg1/dZvg IrbexlAveRO9Qhtep8wCrxJsmZULXFcQe2qSMS82UkbqeJzR4lz3ovLocdEQqP9Q YRipKrv4M5/3H63ajbxJQZaP87WY731tM4Ny2zxO05dek9b70o+dHyjRGMRqqYZD eTKo8ck90aLNsjiXXC6eqVOkcxZv3kbLkpY4Exblmmp0lBnzszhRe0w= =Th+J -----END PGP SIGNATURE----- Merge tag 'acpi-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI support fixes from Rafael Wysocki: "Fix three issues in the ACPI button driver: a possible crash due to a button press after unloading the driver (introduced during the 6.15 development cycle), function keys breakage on Toshiba Tecra X40 due to missing ACPI events (introduced during the 7.0 development cycle), and a missing probe rollback path item that has not been added by mistake during a recent update" * tag 'acpi-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: button: Add missing device class clearing on probe failures ACPI: button: Enable wakeup GPEs for ACPI buttons at probe time ACPI: button: Fix ACPI GPE handler leak during removal |
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|
Linus Torvalds
|
de85416e95 |
Power management fix for 7.1-rc6
Fix a possible amd-pstate-ut cpufreq driver crash introduced by a recent update (K Prateek Nayak) -----BEGIN PGP SIGNATURE----- iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmoYhVgSHHJqd0Byand5 c29ja2kubmV0AAoJEO5fvZ0v1OO1mRIIAJhyAd7iABFrh2uHIGQjF4wb4BfRQ/Sk bStrkwQf4mqTQ8QCIzz7cS882VytJvvMtgUm/0KjedfwV4ZHtJbu1YKuAzKyKxVH dz7wYpUKXmhoQnPjij3xG5UK++khq14PyUKKyHGiUAtJmnhvEaWu07kh5K2pC51y uuJ9z6v+JXiu0m2H/nXtEAkzwnWwqdGSl16f0hFUGJlKeMeA6MStP/vZVomo7hiX G6mYJVS2eYMhjcpetm055X6zMg5IgHdYVhGOlC6G+HPB6/zs5/VZUfhibmfzi1cj yolk8WbjoQDwVXStYofI6YFFv/Bw+B6mblYGb0HwQcUec58taARMSmY= =Ha7c -----END PGP SIGNATURE----- Merge tag 'pm-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix a possible amd-pstate-ut cpufreq driver crash introduced by a recent update (K Prateek Nayak)" * tag 'pm-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq/amd-pstate-ut: Disable dynamic_epp after the mode switch |
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|
Linus Torvalds
|
3e20009988 |
Including fixes from netfilter.
Current release - regressions:
- netfilter: walk fib6_siblings under RCU
Previous releases - regressions:
- netlink: fix sending unassigned nsid after assigned one
- bridge: fix sleep in atomic context in netlink path
- sched: fix ethx:ingress -> ethy:egress -> ethx:ingress mirred loop
- ipv4: fix net->ipv4.sysctl_local_reserved_ports UaF
- eth: tun: free page on short-frame rejection in tun_xdp_one()
Previous releases - always broken:
- skbuff: fix missing zerocopy reference in pskb_carve helpers
- handshake: drain pending requests at net namespace exit
- ethtool:
- rss: avoid modifying the RSS context response
- module: avoid leaking a netdev ref on module flash errors
- coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES
- netfilter: fix dst corruption in same register operation
- nfc: hci: fix out-of-bounds read in HCP header parsing
- ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
- eth: vti: use ip6_tnl.net in vti6_changelink().
- eth: vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"This is again significantly bigger than the same point into the
previous cycle, but at least smaller than last week.
I'm not aware of any pending regression for the current cycle.
Including fixes from netfilter.
Current release - regressions:
- netfilter: walk fib6_siblings under RCU
Previous releases - regressions:
- netlink: fix sending unassigned nsid after assigned one
- bridge: fix sleep in atomic context in netlink path
- sched: fix ethx:ingress -> ethy:egress -> ethx:ingress mirred loop
- ipv4: fix net->ipv4.sysctl_local_reserved_ports UaF
- eth: tun: free page on short-frame rejection in tun_xdp_one()
Previous releases - always broken:
- skbuff: fix missing zerocopy reference in pskb_carve helpers
- handshake: drain pending requests at net namespace exit
- ethtool:
- rss: avoid modifying the RSS context response
- module: avoid leaking a netdev ref on module flash errors
- coalesce: cap profile updates at NET_DIM_PARAMS_NUM_PROFILES
- netfilter: fix dst corruption in same register operation
- nfc: hci: fix out-of-bounds read in HCP header parsing
- ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
- eth:
- vti: use ip6_tnl.net in vti6_changelink().
- vxlan: do not reuse cached ip_hdr() value after
skb_tunnel_check_pmtu()"
* tag 'net-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (94 commits)
dpll: zl3073x: make frequency monitor a per-device attribute
dpll: zl3073x: use __dpll_device_change_ntf() and remove change_work
dpll: export __dpll_device_change_ntf() for use under dpll_lock
net/handshake: Drain pending requests at net namespace exit
net/handshake: Verify file-reference balance in submit paths
net/handshake: Close the submit-side sock_hold race
net/handshake: hand off the pinned file reference to accept_doit
net/handshake: Take a long-lived file reference at submit
net/handshake: Pass negative errno through handshake_complete()
nvme-tcp: store negative errno in queue->tls_err
net/handshake: Use spin_lock_bh for hn_lock
net: skbuff: fix missing zerocopy reference in pskb_carve helpers
net: hibmcge: move dma_rmb() after dma_sync_single_for_cpu() in RX path
net: hibmcge: disable Relaxed Ordering to fix RX packet corruption
selftests/tc-testing: Add netem test case exercising loops
selftests/tc-testing: Add mirred test cases exercising loops
net/sched: act_mirred: Fix return code in early mirred redirect error paths
net/sched: act_mirred: Fix blockcast recursion bypass leading to stack overflow
net/sched: Fix ethx:ingress -> ethy:egress -> ethx:ingress mirred loop
net/sched: fix packet loop on netem when duplicate is on
...
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Linus Torvalds
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b0f908d785 |
gpio fixes for v7.1-rc6
- fix interrupt handling in gpio-mxc - fix scoped_guard() usage in gpio-adnp - don't accept partial writes in gpio-virtuser debugfs interface as they can't really work correctly - fix resource leaks in gpio-rockchip - fix locking issues in remove path in shared GPIO management - undo the vote of a GPIO shared proxy virtual device on GPIO release -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEkeUTLeW1Rh17omX8BZ0uy/82hMMFAmoYQrwACgkQBZ0uy/82 hMOLoA/+L86ir6t3Q5dzKk527gRRZY1xnBj3wVyD/6s3HMpAcbm7NUBLGxNNetJl YxYIQZPHI6NtFH3VpcKQSBx1ECaXhIhBFucWX/qEW7VToQS0+0KV+ys+xR8Tp7fP 4qypSk7v8H1tR4yP0pDnzKUdYm8nA5pDGHwVv+VoV5SdwRVAIjZDL4yRy2/NhtWD qcWL9x0+lWgTt7gXLd3VGfKKbewsNyzDs5FBYaEUsPoYAj/AH4ezFSnNodc/5Ds+ M3bv7bEef3WrYeL2zdSWF4wHy3ABqOtBW/o9F5hYUYVDhRc7ACArYj6ayhPQQRs0 YtyYsnQZkFqu4lFvInQ+5quJfAhxJmWq+fQZbPidXeR+KlDk8N22L4jwWsabEuPj rNI8ijUo88h5VkU7ARstXWCQCZWcxibMS+zPaX0TqV5LhvRZPpuHPbpzACL1HOSr LiFI9npnJNsHkQ7mBhVIrUtbUd+CO549/KIarN7ldX4svwSOGN1lWF3041hRkPXO WGj13ledyw8WdbcqWIqTXKt3po0ILcM/nOfI+vqVqqOLVB2m7sJfdGMR8WQwX2GV g3xdPHAP270LAwkDRbwgYmeAFaiVLLTRV/hag5R6MIdL51pCJC67dB6eUNTqUCmB U2wepAFXRn0HB3XYf9Wmzzh8QbzUTVkqpnjujBq0sVmKvF5zMCE= =hkRD -----END PGP SIGNATURE----- Merge tag 'gpio-fixes-for-v7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio fixes from Bartosz Golaszewski: - fix interrupt handling in gpio-mxc - fix scoped_guard() usage in gpio-adnp - don't accept partial writes in gpio-virtuser debugfs interface as they can't really work correctly - fix resource leaks in gpio-rockchip - fix locking issues in remove path in shared GPIO management - undo the vote of a GPIO shared proxy virtual device on GPIO release * tag 'gpio-fixes-for-v7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpio: rockchip: teardown bugs and resource leaks gpio: rockchip: convert bank->clk to devm_clk_get_enabled() gpio: virtuser: Fix uninitialized data bug in gpio_virtuser_direction_do_write() gpio: shared: fix lockdep false positive by removing unneeded lock gpio: shared: fix deadlock on shared proxy's parent removal gpio: adnp: fix flow control regression caused by scoped_guard() gpio: shared: undo the vote of the proxy on GPIO free gpio: mxc: fix irq_high handling |
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Linus Torvalds
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43a1e37445 |
security/keys: fix missed RCU read section on lookup
Nicholas Carlini reports that the keyring code calls assoc_array_find() in find_key_to_update() without holding the RCU read lock, while the assoc_array_gc() code really is designed around removing the node from the tree and then freeing it after an RCU grace-period. The regular key handling doesn't see this because holding the keyring semaphore hides any lifetime issues, but the persistent key handling uses a different model. Instead of extending the keyring locking, just do the simple RCU locking that the assoc_array was designed for. Reported-by: Nicholas Carlini <npc@anthropic.com> Cc: David Howells <dhowells@redhat.com> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Paul Moore <paul@paul-moore.com> Cc: James Morris James Morris <jmorris@namei.org> Cc: Serge E. Hallyn <serge@hallyn.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Lee Jones
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c0a8899e02 |
HID: wacom: Fix OOB write in wacom_hid_set_device_mode()
wacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE
usage is always located in the first field (field[0]) of the feature report.
However, a device can specify HID_DG_INPUTMODE in a different field.
If HID_DG_INPUTMODE is in a field other than the first one and the first
field has a report_count smaller than the usage_index of HID_DG_INPUTMODE,
this leads to an out-of-bounds write to r->field[0]->value.
Fix this by storing the field index of HID_DG_INPUTMODE in 'struct
hid_data' during feature mapping. In wacom_hid_set_device_mode(), use
this stored field index to access the correct field and add bounds
checks to ensure both the field index and the value index are within
valid ranges before writing.
Cc: stable@vger.kernel.org
Fixes:
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||
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Nathan Chancellor
|
175db11786
|
Disable -Wattribute-alias for clang-23 and newer
Clang recently added support for -Wattribute-alias [1], which results in the same warnings that necessitated commit |