Linux Kernel Improper Authentication Vulnerability
n/a — kernel
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.
7.8
5.5%
Vector breakdown
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- Mar 3, 2022
- Modified
- Jun 3, 2026
- Added to KEV
- Jun 2, 2026
- Federal patch due
- Jun 5, 2026
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2022-0492, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2022-0492 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2022-0492?
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.
How severe is CVE-2022-0492?
CVE-2022-0492 has a CVSS base score of 7.8 out of 10 (CVSS 3.1).
Is CVE-2022-0492 actively exploited in the wild?
Yes. CVE-2022-0492 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jun 2, 2026, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2022-0492?
5.5% - meaning FIRST.org's EPSS model estimates a 5.5% probability this vulnerability will be exploited in the wild within 30 days (92% percentile among all scored CVEs).
What type of vulnerability is CVE-2022-0492?
CVE-2022-0492 is classified under CWE-287.
Cross-checked against
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