CVE-2022-0492: Linux Kernel Improper Authentication Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2026-06-02. EPSS: 5.5% chance of exploitation in the next 30 days.

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.

Affected products

  • Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 20.04 only; version 22.04 only
  • Debian Debian Linux: version 9.0 only; version 10.0 only; version 11.0 only
  • Fedoraproject Fedora: version 35 only
  • Linux Linux Kernel: from 2.6.24, before 4.9.301 (fixed in 4.9.301); from 4.10, before 4.14.266 (fixed in 4.14.266); from 4.15, before 4.19.229 (fixed in 4.19.229); from 4.20, before 5.4.177 (fixed in 5.4.177); from 5.5, before 5.10.97 (fixed in 5.10.97); from 5.11, before 5.15.20 (fixed in 5.15.20); …
  • Netapp Bootstrap OS: affected versions not specified
  • Netapp h300s Firmware: affected versions not specified
  • Netapp h410c Firmware: affected versions not specified
  • Netapp h410s Firmware: affected versions not specified
  • Netapp h500s Firmware: affected versions not specified
  • Netapp h700s Firmware: affected versions not specified
  • Netapp Solidfire, Enterprise Sds & Hci Storage Node: affected versions not specified
  • Netapp Solidfire & Hci Management Node: affected versions not specified
  • Red Hat Codeready Linux Builder: version 8.0 only; version 8.2 only
  • Red Hat Codeready Linux Builder For Power Little Endian: version 8.0 only; version 8.2 only
  • Red Hat Enterprise Linux: version 8.0 only
  • Red Hat Enterprise Linux Eus: version 8.2 only
  • Red Hat Enterprise Linux For IBM Z Systems: version 8.0 only
  • Red Hat Enterprise Linux For IBM Z Systems Eus: version 8.0 only
  • Red Hat Enterprise Linux For Power Little Endian: version 8.0 only
  • Red Hat Enterprise Linux For Power Little Endian Eus: version 8.0 only
  • Red Hat Enterprise Linux For Real Time For Nfv Tus: version 8.0 only; version 8.2 only
  • Red Hat Enterprise Linux For Real Time Tus: version 8.0 only; version 8.2 only
  • Red Hat Enterprise Linux Server Aus: version 8.2 only
  • Red Hat Enterprise Linux Server For Power Little Endian Update Services For SAP Solutions: version 8.1 only; version 8.2 only
  • Red Hat Enterprise Linux Server Tus: version 8.2 only
  • and 2 more

Published 2022-03-03. Last modified 2026-06-17.