CVE-2022-50855
- Source
- https://cve.org/CVERecord?id=CVE-2022-50855
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50855.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-50855
- Downstream
- Published
- 2025-12-30T12:15:30Z
- Modified
- 2026-08-12T03:51:25Z
- Summary
- bpf: prevent leak of lsm program after failed attach
- Details
-
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/
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50855.json" }- References
-
- https://git.kernel.org/stable/c/6a1504dd36cd9a0a69250d61da8bdb17b29f1fe8
- https://git.kernel.org/stable/c/82b39df5ddb298daaf6dc504032ff7eb027fa106
- https://git.kernel.org/stable/c/e89f3edffb860a0f54a9ed16deadb7a4a1fa3862
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50855.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-50855
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git