# CVE-2022-0492: Linux Kernel Improper Authentication Vulnerability

> CVE-2022-0492: Linux Kernel Improper Authentication Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2022-0492
Last updated: 2026-06-17T04:20:42Z

- Published: 2022-03-03 00:00 UTC · Updated: 2026-06-17 04:20 UTC · Assigner: redhat
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 5.5%, 93th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-06-02, federal due date 2026-06-05, ransomware use: Unknown
- CWE: CWE-287

## 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.

## 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.

## Affected vendors and products

- n/a: kernel

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2022-0492)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2022-0492)
- [http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html](http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html)
- [http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html](http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html)
- [http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html](http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=2051505](https://bugzilla.redhat.com/show_bug.cgi?id=2051505)
- [https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af)
- [https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html](https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html)
- [https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html](https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html)
- [https://security.netapp.com/advisory/ntap-20220419-0002/](https://security.netapp.com/advisory/ntap-20220419-0002/)
- [https://www.debian.org/security/2022/dsa-5095](https://www.debian.org/security/2022/dsa-5095)
- [https://www.debian.org/security/2022/dsa-5096](https://www.debian.org/security/2022/dsa-5096)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2022-0492 · Markdown: https://rewindex.com/cve/CVE-2022-0492.md · JSON: https://rewindex.com/api/v1/cves/CVE-2022-0492 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:54.379Z