CVE-2022-50291
published 2025-09-15CVE-2022-50291: In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_psock kcm->rx_psock can be read locklessly in…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.15%
4.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_psock
kcm->rx_psock can be read locklessly in kcm_rfree().
Annotate the read and writes accordingly.
We do the same for kcm->rx_wait in the following patch.
syzbot reported:
BUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm
write to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1:
unreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313
kcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373
__strp_recv+0x64c/0xd20 net/strparser/strparser.c:301
strp_recv+0x6d/0x80 net/strparser/strparser.c:335
tcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703
strp_read_sock net/strparser/strparser.c:358 [inline]
do_strp_work net/strparser/strparser.c:406 [inline]
strp_work+0xe8/0x180 net/strparser/strparser.c:415
process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
worker_thread+0x618/0xa70 kernel/workqueue.c:2436
kthread+0x1a9/0x1e0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
read to 0xffff888123d827b8 of 8 bytes by task 5859 on cpu 0:
kcm_rfree+0x14c/0x220 net/kcm/kcmsock.c:181
skb_release_head_state+0x8e/0x160 net/core/skbuff.c:841
skb_release_all net/core/skbuff.c:852 [inline]
__kfree_skb net/core/skbuff.c:868 [inline]
kfree_skb_reason+0x5c/0x260 net/core/skbuff.c:891
kfree_skb include/linux/skbuff.h:1216 [inline]
kcm_recvmsg+0x226/0x2b0 net/kcm/kcmsock.c:1161
____sys_recvmsg+0x16c/0x2e0
___sys_recvmsg net/socket.c:2743 [inline]
do_recvmmsg+0x2f1/0x710 net/socket.c:2837
__sys_recvmmsg net/socket.c:2916 [inline]
__do_sys_recvmmsg net/socket.c:2939 [inline]
__se_sys_recvmmsg net/socket.c:2932 [inline]
__x64_sys_recvmmsg+0xde/0x160 net/socket.c:2932
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
value changed: 0xffff88812971ce00 -> 0x0000000000000000
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 5859 Comm: syz-executor.3 Not tainted 6.0.0-
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.7-1 (bookworm) | linux 6.0.7-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 13dba69e18d04c8eec7596369f2a0596b0260275 | 13dba69e18d04c8eec7596369f2a0596b0260275 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < bf46af730e58d340f6f740bc69a07c5f6b85c655 | bf46af730e58d340f6f740bc69a07c5f6b85c655 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079 | 1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < e94395e916b48a5b912a0a04570981b5b091acb0 | e94395e916b48a5b912a0a04570981b5b091acb0 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < c325f92d8d9b223d5842609ca067e898e9d34566 | c325f92d8d9b223d5842609ca067e898e9d34566 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 342d918cf9a45df9cf11bbe7162b851adefd178f | 342d918cf9a45df9cf11bbe7162b851adefd178f |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 12a0eb340c9a22e0f8c00d2c0c1a60695ead926a | 12a0eb340c9a22e0f8c00d2c0c1a60695ead926a |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 15e4dabda11b0fa31d510a915d1a580f47dfc92e | 15e4dabda11b0fa31d510a915d1a580f47dfc92e |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 4.10 < 4.14.298 | 4.14.298 |
| linux | linux_kernel | >= 4.15 < 4.19.264 | 4.19.264 |
| linux | linux_kernel | >= 4.20 < 5.4.223 | 5.4.223 |
| linux | linux_kernel | >= 4.6 < 4.9.332 | 4.9.332 |
| linux | linux_kernel | >= 5.11 < 5.15.77 | 5.15.77 |
| linux | linux_kernel | >= 5.16 < 6.0.7 | 6.0.7 |
| linux | linux_kernel | >= 5.5 < 5.10.153 | 5.10.153 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
CVE-2022-50291: In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_psock kcm->rx_psock can be read locklessly
osv·2025-09-15·CVSS 5.5
CVE-2022-50291 [MEDIUM] CVE-2022-50291: In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_psock kcm->rx_psock can be read locklessly
In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_psock kcm->rx_psock can be read locklessly in kcm_rfree(). Annotate the read and writes accordingly. We do the same for kcm->rx_wait in the following patch. syzbot reported: BUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm write to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1: unreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313 kcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373 __strp_recv+0x64c/0xd20 net/strparser/strparser.c:301 strp_recv+0x6d/0x80 net/strparser/strparser.c:335 tcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703 strp_read_sock net/strparser/strparser.c:358 [inline] do_strp_work net/strparser/strparser.c:406 [inline] strp_work+0xe8/0x180 net/strparser/strparser
GHSA
GHSA-mmh8-jm99-qhpc: In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_psock
kcm->rx_psock can be read lockless
ghsa_unreviewed·2025-09-15
CVE-2022-50291 [MEDIUM] GHSA-mmh8-jm99-qhpc: In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_psock
kcm->rx_psock can be read lockless
In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_psock
kcm->rx_psock can be read locklessly in kcm_rfree().
Annotate the read and writes accordingly.
We do the same for kcm->rx_wait in the following patch.
syzbot reported:
BUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm
write to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1:
unreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313
kcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373
__strp_recv+0x64c/0xd20 net/strparser/strparser.c:301
strp_recv+0x6d/0x80 net/strparser/strparser.c:335
tcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703
strp_read_sock net/strparser/strparser.c:358 [inline]
do_strp_work net/strparser/strparser.c:406 [inline]
strp_work+0xe8/0x180 net/strparser/strp
Red Hat
kernel: kcm: annotate data-races around kcm->rx_psock
vendor_redhat·2025-09-15·CVSS 5.5
CVE-2022-50291 [MEDIUM] kernel: kcm: annotate data-races around kcm->rx_psock
kernel: kcm: annotate data-races around kcm->rx_psock
In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_psock
kcm->rx_psock can be read locklessly in kcm_rfree().
Annotate the read and writes accordingly.
We do the same for kcm->rx_wait in the following patch.
syzbot reported:
BUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm
write to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1:
unreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313
kcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373
__strp_recv+0x64c/0xd20 net/strparser/strparser.c:301
strp_recv+0x6d/0x80 net/strparser/strparser.c:335
tcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703
strp_read_sock net/strparser/strparser.c:358 [inline]
do_strp_work net/strparser/strparser.c:40
Debian
CVE-2022-50291: linux - In the Linux kernel, the following vulnerability has been resolved: kcm: annota...
vendor_debian·2022·CVSS 5.5
CVE-2022-50291 [MEDIUM] CVE-2022-50291: linux - In the Linux kernel, the following vulnerability has been resolved: kcm: annota...
In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_psock kcm->rx_psock can be read locklessly in kcm_rfree(). Annotate the read and writes accordingly. We do the same for kcm->rx_wait in the following patch. syzbot reported: BUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm write to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1: unreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313 kcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373 __strp_recv+0x64c/0xd20 net/strparser/strparser.c:301 strp_recv+0x6d/0x80 net/strparser/strparser.c:335 tcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703 strp_read_sock net/strparser/strparser.c:358 [inline] do_strp_work net/strparser/strparser.c:406 [inline] strp_work+0xe8/0x180 net/strparser/strparser
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/12a0eb340c9a22e0f8c00d2c0c1a60695ead926ahttps://git.kernel.org/stable/c/13dba69e18d04c8eec7596369f2a0596b0260275https://git.kernel.org/stable/c/15e4dabda11b0fa31d510a915d1a580f47dfc92ehttps://git.kernel.org/stable/c/1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079https://git.kernel.org/stable/c/342d918cf9a45df9cf11bbe7162b851adefd178fhttps://git.kernel.org/stable/c/bf46af730e58d340f6f740bc69a07c5f6b85c655https://git.kernel.org/stable/c/c325f92d8d9b223d5842609ca067e898e9d34566https://git.kernel.org/stable/c/e94395e916b48a5b912a0a04570981b5b091acb0
2025-09-15
Published