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 17, 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
8 foundWeaponization
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.
- PaloAltoNetworks/can-ctr-escape-cve-2022-0492★ 47
Test whether a container environment is vulnerable to container escapes via CVE-2022-0492
updated May 13, 2026
- chenaotian/CVE-2022-0492★ 34
CVE-2022-0492 EXP and Analysis write up
updated Sep 1, 2026
- SofianeHamlaoui/CVE-2022-0492-Checker★ 13
A script to check if a container environment is vulnerable to container escapes via CVE-2022-0492
updated Jul 20, 2026
- T1erno/CVE-2022-0492-Docker-Breakout-Checker-and-PoC★ 8
Docker Breakout Checker and PoC via CAP_SYS_ADMIN and via user namespaces (CVE-2022-0492)
updated Jul 30, 2026
- KianaBin/CVE-2022-0492-Container-Escape★ 2
CVE-2022-0492-Container-Escape
updated Sep 16, 2022
- Trinadh465/device_renesas_kernel_AOSP10_r33_CVE-2022-0492★ 0
updated Mar 10, 2023
- smallcat9612/CVE-2022-0492-Docker-Breakout-Checker-and-PoC★ 0
CVE-2022-0492
updated Dec 16, 2025
- Perimora/cve_2022_0492★ 0
PoC for CVE-2022-0492
updated Jul 20, 2025
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).
Is there exploit tooling available for CVE-2022-0492?
We found 8 public GitHub repositories referencing CVE-2022-0492, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2022-0492?
CVE-2022-0492 is classified under CWE-287, CWE-862.
Cross-checked against
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