CVE-2022-0492

high

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.

References

https://www.debian.org/security/2022/dsa-5096

https://www.debian.org/security/2022/dsa-5095

https://security.netapp.com/advisory/ntap-20220419-0002/

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html

https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html

https://bugzilla.redhat.com/show_bug.cgi?id=2051505

http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html

http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html

https://www.securityweek.com/organizations-warned-of-exploited-linux-kernel-vulnerability/

https://www.bleepingcomputer.com/news/security/cisa-warns-of-active-attacks-exploiting-android-linux-bugs/

https://securityaffairs.com/193067/security/u-s-cisa-adds-android-and-linux-kernel-flaws-to-its-known-exploited-vulnerabilities-catalog.html

https://www.cisa.gov/news-events/alerts/2026/06/02/cisa-adds-two-known-exploited-vulnerabilities-catalog

https://securelist.com/container-attack-vectors/120010/

https://www.tenable.com/cyber-exposure/tenable-2022-threat-landscape-report

https://unit42.paloaltonetworks.com/cve-2022-0492-cgroups/

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0492

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af

http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html

Details

Source: Mitre, NVD

Published: 2022-03-03

Updated: 2026-06-17

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 6.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.05495