CVE-2022-0492: Linux Kernel Improper Authentication Vulnerability

Patch now

HIGH 7.8EXPLOITEDWATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2022-0492 is a high-severity flaw (CVSS 7.8) affecting h300s firmware, h410c firmware, h410s firmware, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Exploited in the wild (CISA KEV)
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	5.5% (top 7%)
CISA exploited list	Yes, fix due 2026-06-05
Weakness	CWE-287, CWE-862
Published	2022-03-03
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: netapp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-03-03 19:15 UTCPublished CVE record published
2026-06-02Exploited Added to the CISA Known Exploited Vulnerabilities list
2026-06-05Deadline CISA due date for US federal agencies to patch
2026-06-17 04:20 UTCUpdated Record last modified

netapp h300s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h410c firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h410s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h500s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h700s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp bootstrap os MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · nemo · FIXED · 6.8.0-1.fc46 · FEDORA-2026-0edead723f · source

sudo dnf upgrade --advisory=FEDORA-2026-0edead723f

Fedora ELN · composer · FIXED · 2.11.1-1.eln159 · FEDORA-2026-cb4f992456 · source

sudo dnf upgrade --advisory=FEDORA-2026-cb4f992456

Ubuntu 20.04 · linux · FIXED · 5.4.0-105.119

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.4.0-105.119" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 22.04 · linux · NOT AFFECTED

Ubuntu 24.04 · linux · NOT AFFECTED

Ubuntu 24.10 · linux · NOT AFFECTED

Ubuntu 25.04 · linux · NOT AFFECTED

Debian 12 · linux · FIXED · 5.16.7-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.16.7-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · linux · FIXED · 5.16.7-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.16.7-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 6 Extended Lifecycle Support · kernel · FIXED · kernel-2.6.32-754.47.1.el6

sudo dnf upgrade --advisory=RHSA-2022:1417 rpm -q kernel

RHEL 7 · kernel-rt · FIXED · kernel-rt-3.10.0-1160.66.1.rt56.1207.el7

sudo dnf upgrade --advisory=RHSA-2022:4644 rpm -q kernel-rt

RHEL 7 · kernel · FIXED · kernel-3.10.0-1160.66.1.el7

sudo dnf upgrade --advisory=RHSA-2022:4642 rpm -q kernel

RHEL 7.3 Advanced Update Support · kernel · FIXED · kernel-3.10.0-514.101.1.el7

sudo dnf upgrade --advisory=RHSA-2022:2189 rpm -q kernel

RHEL 7.4 Advanced Update Support · kernel · FIXED · kernel-3.10.0-693.103.1.el7

sudo dnf upgrade --advisory=RHSA-2022:5157 rpm -q kernel

Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2023-070 · source

sudo dnf update --advisory=ALAS2023-2023-070

Amazon Linux 2 · see advisory · FIXED · ALAS2-2022-1749 · source

sudo yum update --advisory=ALAS2-2022-1749

Amazon Linux 1 · see advisory · FIXED · ALAS-2022-1563 · source

sudo yum update --advisory=ALAS-2022-1563

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: PaloAltoNetworks/can-ctr-escape-cve-2022-0492 (46 stars)
GitHub PoC: chenaotian/CVE-2022-0492 (35 stars)
GitHub PoC: SofianeHamlaoui/CVE-2022-0492-Checker (13 stars)
Write-up: git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d0
Metasploit: Docker cgroups Container Escape

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-0492?

h300s firmware: mitigate or apply the listed mitigation; h410c firmware: mitigate or apply the listed mitigation; h410s firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-0492 being exploited?

Yes. CVE-2022-0492 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2022-0492 affect?

CVE-2022-0492 affects h300s firmware, h410c firmware, h410s firmware. Severity is high (CVSS 7.8). 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

How urgent is CVE-2022-0492?

Priority 86/100. High severity; EPSS top 7%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; On your watchlist

Software pages

Linux kernel vulnerabilities · Bootstrap vulnerabilities

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References

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