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b30b1675aa
linux/net
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Justin Iurman b30b1675aa net: ioam6: fix OOB and missing lock 
When trace->type.bit6 is set:

    if (trace->type.bit6) {
        ...
        queue = skb_get_tx_queue(dev, skb);
        qdisc = rcu_dereference(queue->qdisc);

This code can lead to an out-of-bounds access of the dev->_tx[] array
when is_input is true. In such a case, the packet is on the RX path and
skb->queue_mapping contains the RX queue index of the ingress device. If
the ingress device has more RX queues than the egress device (dev) has
TX queues, skb_get_queue_mapping(skb) will exceed dev->num_tx_queues.
Add a check to avoid this situation since skb_get_tx_queue() does not
clamp the index. This issue has also revealed that per queue visibility
cannot be accurate and will be replaced later as a new feature.

While at it, add missing lock around qdisc_qstats_qlen_backlog(). The
function __ioam6_fill_trace_data() is called from both softirq and
process contexts, hence the use of spin_lock_bh() here.

Fixes: b63c5478e9 ("ipv6: ioam: Support for Queue depth data field")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Closes: https://lore.kernel.org/netdev/20260403214418.2233266-2-kuba@kernel.org/
Signed-off-by: Justin Iurman <justin.iurman@gmail.com>
Link: https://patch.msgid.link/20260404134137.24553-1-justin.iurman@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-08 19:08:56 -07:00
..
6lowpan net: replace ND_PRINTK with dynamic debug 2025-07-10 15:27:32 -07:00
9p Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
802 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
8021q Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
appletalk Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
atm atm: lec: fix use-after-free in sock_def_readable() 2026-03-14 08:05:47 -07:00
ax25 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
batman-adv Here are two batman-adv bugfixes: 2026-04-08 18:50:27 -07:00
bluetooth Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync 2026-04-01 16:48:28 -04:00
bpf Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
bridge bridge: guard local VLAN-0 FDB helpers against NULL vlan group 2026-04-03 14:45:51 -07:00
caif Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
can can: isotp: fix tx.buf use-after-free in isotp_sendmsg() 2026-03-19 17:16:02 +01:00
ceph libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply() 2026-03-11 10:18:56 +01:00
core net: avoid nul-deref trying to bind mp to incapable device 2026-04-07 18:57:56 -07:00
dcb Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
devlink Convert 'alloc_flex' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
dns_resolver net/dns_resolver: use credential guards in dns_query() 2025-11-04 12:36:51 +01:00
dsa Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ethernet bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
ethtool Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
handshake treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
hsr net: hsr: fix VLAN add unwind on slave errors 2026-04-02 08:23:49 -07:00
ieee802154 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ife
ipv4 ipsec-2026-04-08 2026-04-08 18:54:32 -07:00
ipv6 net: ioam6: fix OOB and missing lock 2026-04-08 19:08:56 -07:00
iucv Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
kcm kcm: fix zero-frag skb in frag_list on partial sendmsg error 2026-02-23 17:26:55 -08:00
key net: af_key: zero aligned sockaddr tail in PF_KEY exports 2026-04-07 11:08:24 +02:00
l2tp Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
l3mdev
lapb treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
llc treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
mac80211 wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure 2026-03-18 09:09:58 +01:00
mac802154 bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
mctp mctp: route: hold key->lock in mctp_flow_prepare_output() 2026-03-10 11:38:36 +01:00
mpls mpls: add seqcount to protect the platform_label{,s} pair 2026-03-26 18:32:14 -07:00
mptcp mptcp: fix soft lockup in mptcp_recvmsg() 2026-03-31 18:58:37 -07:00
ncsi net: ncsi: fix skb leak in error paths 2026-03-06 17:34:48 -08:00
netfilter netfilter: nfnetlink_queue: make hash table per queue 2026-04-08 13:34:51 +02:00
netlabel Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
netlink Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
netrom Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
nfc nfc: nci: fix circular locking dependency in nci_close_device 2026-03-19 16:56:18 -07:00
nsh
openvswitch openvswitch: validate MPLS set/set_masked payload length 2026-03-20 18:37:31 -07:00
packet net: fix fanout UAF in packet_release() via NETDEV_UP race 2026-03-23 17:07:19 -07:00
phonet bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
psample treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
psp Including fixes from IPsec, Bluetooth and netfilter 2026-02-26 08:00:13 -08:00
qrtr net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak 2026-03-26 20:22:38 -07:00
rds rds: ib: reject FRMR registration before IB connection is established 2026-04-01 17:52:40 -07:00
rfkill net: rfkill: prevent unlimited numbers of rfkill events from being created 2026-04-07 12:35:04 +02:00
rose net/rose: fix NULL pointer dereference in rose_transmit_link on reconnect 2026-03-12 19:23:59 -07:00
rxrpc rxrpc: proc: size address buffers for %pISpc output 2026-04-08 18:45:32 -07:00
sched net: sched: act_csum: validate nested VLAN headers 2026-04-03 14:34:56 -07:00
sctp Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
shaper net: shaper: protect from late creation of hierarchy 2026-03-19 13:47:15 +01:00
smc net/smc: fix double-free of smc_spd_priv when tee() duplicates splice pipe buffer 2026-03-20 18:59:30 -07:00
strparser Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-11-13 12:35:38 -08:00
sunrpc nfsd-7.0 fixes: 2026-03-18 14:27:11 -07:00
switchdev treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tipc tipc: fix bc_ackers underflow on duplicate GRP_ACK_MSG 2026-04-03 15:31:17 -07:00
tls net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption 2026-04-07 14:53:42 +02:00
unix af_unix: Give up GC if MSG_PEEK intervened. 2026-03-12 13:37:18 -07:00
vmw_vsock vsock: initialize child_ns_mode_locked in vsock_net_init() 2026-04-02 08:18:56 -07:00
wireless wifi: cfg80211: cancel pmsr_free_wk in cfg80211_pmsr_wdev_down 2026-03-06 12:41:59 +01:00
x25 net/x25: Fix overflow when accumulating packets 2026-04-02 13:36:08 +02:00
xdp xsk: validate MTU against usable frame size on bind 2026-04-06 18:43:51 -07:00
xfrm xfrm_user: fix info leak in build_report() 2026-04-07 10:36:38 +02:00
compat.c socket: Unify getsockname and getpeername implementation 2025-11-26 13:45:23 -07:00
devres.c
Kconfig net: Kconfig: discourage drop_monitor enablement 2025-10-17 16:29:26 -07:00
Kconfig.debug
Makefile psp: base PSP device support 2025-09-18 12:32:06 +02:00
socket.c net: Drop the lock in skb_may_tx_timestamp() 2026-02-24 11:27:29 +01:00
sysctl_net.c