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Findings

CVE-2022-0492

Linux Kernel Improper Authentication Vulnerability

Published Mar 3, 2022 · updated Jun 16, 2026 · Linux Kernel

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.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 3, 2022 · Catalog

    Detected

    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.

  2. Jun 2, 2026 · CISA KEV

    Known exploited

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

  3. Jun 5, 2026 · CISA KEV

    Remediation due

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

  4. Jun 16, 2026 · Catalog

    Updated

    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.

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.

CISA due date Jun 5, 2026

Affected

  • cpe canonical/ubuntu linux14.04
  • cpe debian/debian linux9.0
  • cpe fedoraproject/fedora35
  • cpe linux/linux kernelversion unspecified
  • cpe netapp/bootstrap osversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h410c firmwareversion unspecified
  • cpe netapp/h410s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/h700s firmwareversion unspecified
  • cpe redhat/codeready linux builder8.0
  • vendor Linux Kernelversion unspecified

Sources

  • CISA KEVCVE-2022-0492

    Linux Kernel contains an improper authentication vulnerability which could allow for privilege escalation via the cgroups v1 release_agent feature.

    cisa.gov
  • CVE.orgCVE-2022-0492

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2022-0492

    30-day exploitation probability 5.5%

    first.org
  • Metasploit Modulesexploit_linux/local/docker_cgroup_escape

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2022-0492

    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 unexpecte

    nvd.nist.gov

References