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Actively exploited · Published Mar 3, 2022 · Assigned by redhat

CVE-2022-0492

High 7.8 Exploited

In plain English

A high-severity improper authentication in kernel. Attackers are actively exploiting it in the wild (listed by CISA on June 2, 2026). The chance it is exploited in the next 30 days is estimated at 5.5% (higher than 93% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)5.5%top 7.1% of all CVEs
Exploited in the wildYesCISA KEV since Jun 2, 2026
Attack tooling2Metasploit, Public PoC

CISA guidance

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Federal agencies must remediate by Jun 5, 2026.

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8kernel-tools-libs-devel4.18.0-348.20.1.el8_5ALSA-2022:0825
Debian:12linux5.16.7-1DEBIAN-CVE-2022-0492
Debian:13linux5.16.7-1DEBIAN-CVE-2022-0492
Debian:14linux5.16.7-1DEBIAN-CVE-2022-0492
Rocky Linux:8kernel0:4.18.0-348.20.1.el8_5RLSA-2022:0825
Rocky Linux:8kernel-rt0:4.18.0-348.20.1.rt7.150.el8_5RLSA-2022:0819
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-0492
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-0492
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-0492

Affected products (as reported)

VendorProductVersions
n/a kernel kernel 5.17 rc3

Weakness: CWE-287 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References