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🛡️ CVE-2022-50855 — kernel

⚪ Unknown ✅ No Known Exploit NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

bpf: prevent leak of lsm program after failed attach

In the Linux kernel, the following vulnerability has been resolved:

bpf: prevent leak of lsm program after failed attach

In [0], we added the ability to bpf_prog_attach LSM programs to cgroups,

but in our validation to make sure the prog is meant to be attached to

BPF_LSM_CGROUP, we return too early if the check fails. This results in

lack of decrementing prog's refcnt (through bpf_prog_put)

leaving the LSM program alive past the point of the expected lifecycle.

This fix allows for the decrement to take place.

[0] https://lore.kernel.org/all/[email protected]/

Affected software

CVE-2022-50855 is recorded against 2 packages.

  • kernel (from 6.1.0 up to 6.1.2)
  • unknown

Timeline and source

Published on 30 December 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2022-50855 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-12-30
Updated 2026-08-20
Modified 2026-08-12
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 6.1.0 6.1.2
unknown — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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