CVE-2022-49877

MEDIUM EPSS 5.5%
Published May 1, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 1, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues When running `test_sockmap` selftests, the following warning appears: WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0 Call Trace: <TASK> inet_csk_destroy_sock+0x55/0x110 tcp_rcv_state_process+0xd28/0x1380 ? tcp_v4_do_rcv+0x77/0x2c0 tcp_v4_do_rcv+0x77/0x2c0 __release_sock+0x106/0x130 __tcp_close+0x1a7/0x4e0 tcp_close+0x20/0x70 inet_release+0x3c/0x80 __sock_release+0x3a/0xb0 sock_close+0x14/0x20 __fput+0xa3/0x260 task_work_run+0x59/0xb0 exit_to_user_mode_prepare+0x1b3/0x1c0 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x48/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae The root case is in commit 84472b436e76 ("bpf, sockmap: Fix more uncharged while msg has more_data"), where I used msg->sg.size to replace the tosend, causing breakage: if (msg->apply_bytes && msg->apply_bytes < tosend) tosend = psock->apply_bytes;

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥5.4.189  –  <5.4.225
linuxlinux_kernel*≥5.10.110  –  <5.10.155
linuxlinux_kernel*≥5.15.33  –  <5.15.79
linuxlinux_kernel*≥5.16.19  –  <5.17
linuxlinux_kernel*≥5.17.2  –  <6.0.9
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ec95b94716a1e4d126edc3fb2bc426a717e2dba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/95adbd2ac8de82e43fd6b347e7e1b47f74dc1abb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cc21dc48a78cc9e5af9a4d039cd456446a6e73ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d975bec1eaeb52341acc9273db79ddb078220399
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ec95b94716a1e4d126edc3fb2bc426a717e2dba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/95adbd2ac8de82e43fd6b347e7e1b47f74dc1abb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cc21dc48a78cc9e5af9a4d039cd456446a6e73ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d975bec1eaeb52341acc9273db79ddb078220399
    Patch