CVE-2022-50855 (GCVE-0-2022-50855)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2025-12-30 12:15
VLAI?
Title
bpf: prevent leak of lsm program after failed attach
Summary
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/20220628174314.1216643-4-sdf@google.com/
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 69fd337a975c7e690dfe49d9cb4fe5ba1e6db44e , < 82b39df5ddb298daaf6dc504032ff7eb027fa106 (git)
Affected: 69fd337a975c7e690dfe49d9cb4fe5ba1e6db44e , < 6a1504dd36cd9a0a69250d61da8bdb17b29f1fe8 (git)
Affected: 69fd337a975c7e690dfe49d9cb4fe5ba1e6db44e , < e89f3edffb860a0f54a9ed16deadb7a4a1fa3862 (git)
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    Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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