CVE-2022-0492

high

Published 2022-03-10 · Modified 2023-09-15

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.0

Description

A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Metasploit modules

exploit_linux/local/docker_cgroup_escape rank 600

Docker cgroups Container Escape

Source code queued for fetch — refresh in a moment.

OS impact

OS	Version	Status	Fixed in
sles		affected
rocky	8	fixed
debian	bookworm	fixed	`5.16.7-1`
debian	bullseye	fixed	`5.10.103-1`
debian	forky	fixed	`5.16.7-1`
debian	sid	fixed	`5.16.7-1`
debian	trixie	fixed	`5.16.7-1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.