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ea62dd1383
linux/net
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Matthieu Baerts (NGI0) ea62dd1383 sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy 
As mentioned in a previous commit of this series, using the 'net'
structure via 'current' is not recommended for different reasons:

- Inconsistency: getting info from the reader's/writer's netns vs only
  from the opener's netns.

- current->nsproxy can be NULL in some cases, resulting in an 'Oops'
  (null-ptr-deref), e.g. when the current task is exiting, as spotted by
  syzbot [1] using acct(2).

The 'net' structure can be obtained from the table->data using
container_of().

Note that table->data could also be used directly, as this is the only
member needed from the 'net' structure, but that would increase the size
of this fix, to use '*data' everywhere 'net->sctp.sctp_hmac_alg' is
used.

Fixes: 3c68198e75 ("sctp: Make hmac algorithm selection for cookie generation dynamic")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/67769ecb.050a0220.3a8527.003f.GAE@google.com [1]
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250108-net-sysctl-current-nsproxy-v1-4-5df34b2083e8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-09 08:53:34 -08:00
..
6lowpan
9p net/9p/usbg: allow building as standalone module 2024-11-22 23:48:14 +09:00
802 net: 802: LLC+SNAP OID:PID lookup on start of skb data 2025-01-04 08:06:24 -08:00
8021q net: convert to nla_get_*_default() 2024-11-11 10:32:06 -08:00
appletalk appletalk: Remove deadcode 2024-10-04 12:42:32 +01:00
atm
ax25
batman-adv batman-adv: Do not let TT changes list grows indefinitely 2024-12-05 22:38:26 +01:00
bluetooth Bluetooth: btmtk: Fix failed to send func ctrl for MediaTek devices. 2025-01-08 11:14:03 -05:00
bpf bpf, test_run: Fix LIVE_FRAME frame update after a page has been recycled 2024-10-31 16:15:21 +01:00
bridge ndo_fdb_del: Add a parameter to report whether notification was sent 2024-11-15 16:39:18 -08:00
caif caif: Remove unused cfsrvl_getphyid 2024-10-08 15:33:49 -07:00
can can: j1939: j1939_session_new(): fix skb reference counting 2024-12-02 09:53:39 +01:00
ceph ceph: allocate sparse_ext map only for sparse reads 2024-12-16 23:25:44 +01:00
core netdev: prevent accessing NAPI instances from another namespace 2025-01-08 10:21:00 -08:00
dcb dcb: Use rtnl_register_many(). 2024-10-15 18:52:26 -07:00
dccp dccp: Fix memory leak in dccp_feat_change_recv 2024-12-03 09:50:21 +01:00
devlink net: convert to nla_get_*_default() 2024-11-11 10:32:06 -08:00
dns_resolver
dsa net: dsa: restore dsa_software_vlan_untag() ability to operate on VLAN-untagged traffic 2024-12-18 19:22:36 -08:00
ethernet
ethtool ethtool: Fix wrong mod state in case of verbose and no_mask bitset 2024-12-04 18:54:43 -08:00
handshake module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
hsr net: hsr: must allocate more bytes for RedBox support 2024-12-03 12:08:33 +01:00
ieee802154 net: convert to nla_get_*_default() 2024-11-11 10:32:06 -08:00
ife
ipv4 tcp: Annotate data-race around sk->sk_mark in tcp_v4_send_reset 2025-01-08 10:22:02 -08:00
ipv6 ila: serialize calls to nf_register_net_hooks() 2025-01-02 18:42:32 -08:00
iucv s390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct() 2024-11-26 10:02:53 +01:00
kcm kcm: replace call_rcu by kfree_rcu for simple kmem_cache_free callback 2024-10-15 10:50:21 -07:00
key xfrm: Add support for per cpu xfrm state handling. 2024-10-29 11:56:00 +01:00
l2tp net/l2tp: fix warning in l2tp_exit_net found by syzbot 2024-11-26 09:27:07 +01:00
l3mdev
lapb
llc net: llc: reset skb->transport_header 2024-12-27 11:23:37 -08:00
mac80211 A small set of fixes: 2024-12-10 18:44:25 -08:00
mac802154 mac802154: check local interfaces before deleting sdata list 2024-11-19 10:54:17 +01:00
mctp net: mctp: handle skb cleanup on sock_queue failures 2024-12-19 11:52:49 +01:00
mpls rtnetlink: Return int from rtnl_af_register(). 2024-10-22 11:02:05 +02:00
mptcp mptcp: sysctl: blackhole timeout: avoid using current->nsproxy 2025-01-09 08:53:34 -08:00
ncsi net/ncsi: Disable the ncsi work before freeing the associated structure 2024-10-03 10:14:14 +02:00
netfilter netfilter: ipset: Fix for recursive locking warning 2024-12-19 00:28:47 +01:00
netlabel Networking changes for 6.13. 2024-11-21 08:28:08 -08:00
netlink netlink: fix false positive warning in extack during dumps 2024-11-24 16:58:07 -08:00
netrom netrom: check buffer length before accessing it 2024-12-23 10:04:55 -08:00
nfc net: nfc: Propagate ISO14443 type A target ATS to userspace via netlink 2024-11-07 10:21:58 +01:00
nsh
openvswitch net: convert to nla_get_*_default() 2024-11-11 10:32:06 -08:00
packet af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK 2025-01-02 18:40:59 -08:00
phonet phonet: do not call synchronize_rcu() from phonet_route_del() 2024-11-07 20:34:16 -08:00
psample psample: adjust size if rate_as_probability is set 2024-12-18 19:23:04 -08:00
qrtr net: qrtr: Update packets cloning when broadcasting 2024-09-24 10:48:16 +02:00
rds net/rds: remove unused struct 'rds_ib_dereg_odp_mr' 2024-10-03 16:42:52 -07:00
rfkill Get rid of 'remove_new' relic from platform driver struct 2024-12-01 15:12:43 -08:00
rose
rxrpc rxrpc: Improve setsockopt() handling of malformed user input 2024-11-28 08:57:42 +01:00
sched sched: sch_cake: add bounds checks to host bulk flow fairness counts 2025-01-09 08:18:41 -08:00
sctp sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy 2025-01-09 08:53:34 -08:00
shaper net-shapers: implement cap validation in the core 2024-10-10 08:30:23 -07:00
smc net/smc: check return value of sock_recvmsg when draining clc data 2024-12-15 12:34:59 +00:00
strparser
sunrpc module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
switchdev
tipc tipc: fix NULL deref in cleanup_bearer() 2024-12-05 17:36:22 -08:00
tls tls: Fix tls_sw_sendmsg error handling 2025-01-07 17:00:19 -08:00
unix splice: do not checksum AF_UNIX sockets 2024-12-11 20:22:41 -08:00
vmw_vsock bpf, vsock: Invoke proto::close on close() 2024-11-25 14:19:14 -08:00
wireless A small set of fixes: 2024-12-10 18:44:25 -08:00
x25
xdp xsk: always clear DMA mapping information when unmapping the pool 2024-11-25 14:27:37 -08:00
xfrm ipsec-next-2024-11-15 2024-11-18 11:52:49 +00:00
compat.c
devres.c
Kconfig netlink: spec: add shaper YAML spec 2024-10-10 08:30:21 -07:00
Kconfig.debug rtnetlink: Add per-netns RTNL. 2024-10-08 15:16:59 +02:00
Makefile netlink: spec: add shaper YAML spec 2024-10-10 08:30:21 -07:00
socket.c Networking changes for 6.13. 2024-11-21 08:28:08 -08:00
sysctl_net.c