CVE-2022-50855bpf: prevent leak of lsm program after failed attach
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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/
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- May 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 69fd337a975c7e690dfe49d9cb4fe5ba1e6db44e before 82b39df5ddb298daaf6dc504032ff7eb027fa106; 69fd337a975c7e690dfe49d9cb4fe5ba1e6db44e builds before 6a1504dd36cd9a0a69250d61da8bdb17b29f1fe8; from 69fd337a975c7e690dfe49d9cb4fe5ba1e6db44e before e89f3edffb860a0f54a9ed16deadb7a4a1fa3862 | CNA record |
References
- https://git.kernel.org/stable/c/82b39df5ddb298daaf6dc504032ff7eb027fa106
- https://git.kernel.org/stable/c/6a1504dd36cd9a0a69250d61da8bdb17b29f1fe8
- https://git.kernel.org/stable/c/e89f3edffb860a0f54a9ed16deadb7a4a1fa3862
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.