Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2022-0492

Linux Kernel Improper Authentication Vulnerability

HighExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Linux, fix it now.

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.

US federal civilian agencies must remediate by Jun 5, 2026.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

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.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsFixed inSource
LinuxLinux>= 2.6.24, < 4.9.301; >= 4.10, < 4.14.266; >= 4.15, < 4.19.229; >= 4.20, < 5.4.177; >= 5.5, < 5.10.97; >= 5.11, < 5.15.204.9.301; 4.14.266; 4.19.229; 5.4.177; 5.10.97; 5.15.20KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2022-0492 scored CVSS 7.8: Linux Kernel, Linux Kernel Improper Authentication Vulnerability

    CISA lists this as exploited in the wild. Unpatched Kernel systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2022-0492: Linux Kernel, Linux Kernel Improper Authentication Vulnerability

    An official fix is now available for Linux Kernel. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References