5.5

CVE-2022-49877: bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues

Analyzed
AliasesUBUNTU-CVE-2022-49877DEBIAN-CVE-2022-49877
Published 01-05-2025Last modified 23-05-2026

Vulnerability summary

CVE-2022-49877 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
SUSE-SU-2025:01983-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu109 products
  • linux< 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf, < d975bec1eaeb52341acc9273db79ddb078220399 | ≥ 7b812a369e6416ab06d83cdd39d8e3f752781dd0, < cc21dc48a78cc9e5af9a4d039cd456446a6e73ff | ≥ 168ff181f5b6e7fce684c98a30d35da1dbf8f82a, < 95adbd2ac8de82e43fd6b347e7e1b47f74dc1abb | ≥ 84472b436e760ba439e1969a9e3c5ae7c86de39d, < 14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7 | ≥ 84472b436e760ba439e1969a9e3c5ae7c86de39d, < 8ec95b94716a1e4d126edc3fb2bc426a717e2dba | 87d532d41ef937e16f61b3d2094f3a2ac49be365 | abb4caa477a5450817d2aa1198edce66450aecf8 | ≥ 5.4.189, < 5.4.225 | ≥ 5.10.110, < 5.10.155 | ≥ 5.15.33, < 5.15.79 | ≥ 5.16.19, < 5.17 | ≥ 5.17.2, < 5.18 | 5.18
  • linux_kernel≥ 5.4.189, < 5.4.225 | ≥ 5.10.110, < 5.10.155 | ≥ 5.15.33, < 5.15.79 | ≥ 5.16.19, < 5.17 | ≥ 5.17.2, < 6.0.9 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4
Debian1 product
  • linux< 6.0.10-1

3 vendors · 112 products

References

9 links