CVE-2022-50265
published 2025-09-15CVE-2022-50265: In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_wait kcm->rx_psock can be read locklessly in…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
4.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_wait
kcm->rx_psock can be read locklessly in kcm_rfree().
Annotate the read and writes accordingly.
syzbot reported:
BUG: KCSAN: data-race in kcm_rcv_strparser / kcm_rfree
write to 0xffff88810784e3d0 of 1 bytes by task 1823 on cpu 1:
reserve_rx_kcm net/kcm/kcmsock.c:283 [inline]
kcm_rcv_strparser+0x250/0x3a0 net/kcm/kcmsock.c:363
__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 0xffff88810784e3d0 of 1 bytes by task 17869 on cpu 0:
kcm_rfree+0x121/0x220 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: 0x01 -> 0x00
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 17869 Comm: syz-executor.2 Not tainted 6.1.0-rc1-syzkaller-00010-gbb1a1146467a-dirty #0
Hardware name: Google Google Compute Engine
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 < dbc3a0b917c4f75292b1c0819c188e40fd3c8924 | dbc3a0b917c4f75292b1c0819c188e40fd3c8924 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 9ae47f11493509cde707af8ecc7eee04c8b8e635 | 9ae47f11493509cde707af8ecc7eee04c8b8e635 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < f1f7122bb2ef056afc6f91ce4c35ab6df1207c8d | f1f7122bb2ef056afc6f91ce4c35ab6df1207c8d |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 663682cd3192dd4f3547b7890a4391c72441001d | 663682cd3192dd4f3547b7890a4391c72441001d |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < e2a28807b1ceaa309164b92c38d73d12feea33df | e2a28807b1ceaa309164b92c38d73d12feea33df |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 62086d1c4602e4f2ec07b975165afc2ed0ff1be9 | 62086d1c4602e4f2ec07b975165afc2ed0ff1be9 |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 2733fb2ad5bfbe6538f2f93a21f2504e3dba9d6a | 2733fb2ad5bfbe6538f2f93a21f2504e3dba9d6a |
| linux | linux | >= ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 0c745b5141a45a076f1cb9772a399f7ebcb0948a | 0c745b5141a45a076f1cb9772a399f7ebcb0948a |
| 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
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OSV
CVE-2022-50265: In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_wait kcm->rx_psock can be read locklessly
osv·2025-09-15·CVSS 5.5
CVE-2022-50265 [MEDIUM] CVE-2022-50265: In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_wait kcm->rx_psock can be read locklessly
In the Linux kernel, the following vulnerability has been resolved: kcm: annotate data-races around kcm->rx_wait kcm->rx_psock can be read locklessly in kcm_rfree(). Annotate the read and writes accordingly. syzbot reported: BUG: KCSAN: data-race in kcm_rcv_strparser / kcm_rfree write to 0xffff88810784e3d0 of 1 bytes by task 1823 on cpu 1: reserve_rx_kcm net/kcm/kcmsock.c:283 [inline] kcm_rcv_strparser+0x250/0x3a0 net/kcm/kcmsock.c:363 __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
GHSA
GHSA-7m24-gr82-qg53: In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_wait
kcm->rx_psock can be read locklessl
ghsa_unreviewed·2025-09-15
CVE-2022-50265 [MEDIUM] GHSA-7m24-gr82-qg53: In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_wait
kcm->rx_psock can be read locklessl
In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_wait
kcm->rx_psock can be read locklessly in kcm_rfree().
Annotate the read and writes accordingly.
syzbot reported:
BUG: KCSAN: data-race in kcm_rcv_strparser / kcm_rfree
write to 0xffff88810784e3d0 of 1 bytes by task 1823 on cpu 1:
reserve_rx_kcm net/kcm/kcmsock.c:283 [inline]
kcm_rcv_strparser+0x250/0x3a0 net/kcm/kcmsock.c:363
__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:
Red Hat
kernel: kcm: annotate data-races around kcm->rx_wait
vendor_redhat·2025-09-15·CVSS 5.5
CVE-2022-50265 [MEDIUM] kernel: kcm: annotate data-races around kcm->rx_wait
kernel: kcm: annotate data-races around kcm->rx_wait
In the Linux kernel, the following vulnerability has been resolved:
kcm: annotate data-races around kcm->rx_wait
kcm->rx_psock can be read locklessly in kcm_rfree().
Annotate the read and writes accordingly.
syzbot reported:
BUG: KCSAN: data-race in kcm_rcv_strparser / kcm_rfree
write to 0xffff88810784e3d0 of 1 bytes by task 1823 on cpu 1:
reserve_rx_kcm net/kcm/kcmsock.c:283 [inline]
kcm_rcv_strparser+0x250/0x3a0 net/kcm/kcmsock.c:363
__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
Debian
CVE-2022-50265: linux - In the Linux kernel, the following vulnerability has been resolved: kcm: annota...
vendor_debian·2022·CVSS 5.5
CVE-2022-50265 [MEDIUM] CVE-2022-50265: 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_wait kcm->rx_psock can be read locklessly in kcm_rfree(). Annotate the read and writes accordingly. syzbot reported: BUG: KCSAN: data-race in kcm_rcv_strparser / kcm_rfree write to 0xffff88810784e3d0 of 1 bytes by task 1823 on cpu 1: reserve_rx_kcm net/kcm/kcmsock.c:283 [inline] kcm_rcv_strparser+0x250/0x3a0 net/kcm/kcmsock.c:363 __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
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0c745b5141a45a076f1cb9772a399f7ebcb0948ahttps://git.kernel.org/stable/c/2733fb2ad5bfbe6538f2f93a21f2504e3dba9d6ahttps://git.kernel.org/stable/c/62086d1c4602e4f2ec07b975165afc2ed0ff1be9https://git.kernel.org/stable/c/663682cd3192dd4f3547b7890a4391c72441001dhttps://git.kernel.org/stable/c/9ae47f11493509cde707af8ecc7eee04c8b8e635https://git.kernel.org/stable/c/dbc3a0b917c4f75292b1c0819c188e40fd3c8924https://git.kernel.org/stable/c/e2a28807b1ceaa309164b92c38d73d12feea33dfhttps://git.kernel.org/stable/c/f1f7122bb2ef056afc6f91ce4c35ab6df1207c8d
2025-09-15
Published