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CVE-2022-0492

HIGHCVSS 7.8/10Actively ExploitedEPSS 5.53%

Last modified

CVE-2022-0492 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 5.53% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
5.53%

91.8th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
NetappH300s FirmwareAll versions—
NetappH410c FirmwareAll versions—
NetappH410s FirmwareAll versions—
NetappH500s FirmwareAll versions—
NetappH700s FirmwareAll versions—
NetappBootstrap OsAll versions—
LinuxLinux Kernel>= 2.6.24, < 4.9.301—
LinuxLinux Kernel>= 4.10, < 4.14.266—
LinuxLinux Kernel>= 4.15, < 4.19.229—
LinuxLinux Kernel>= 4.20, < 5.4.177—
LinuxLinux Kernel>= 5.5, < 5.10.97—
LinuxLinux Kernel>= 5.11, < 5.15.20—
LinuxLinux Kernel>= 5.16, < 5.16.6—
LinuxLinux Kernel5.17Rc1
DebianDebian Linux9.0—
DebianDebian Linux10.0—
DebianDebian Linux11.0—
RedhatCodeready Linux Builder8.0—
RedhatCodeready Linux Builder8.2—
RedhatCodeready Linux Builder For Power Little Endian8.0—
RedhatCodeready Linux Builder For Power Little Endian8.2—
RedhatVirtualization Host4.0—
RedhatEnterprise Linux8.0—
RedhatEnterprise Linux Eus8.2—
RedhatEnterprise Linux For Ibm Z Systems8.0—
RedhatEnterprise Linux For Ibm Z Systems Eus8.0—
RedhatEnterprise Linux For Power Little Endian8.0—
RedhatEnterprise Linux For Power Little Endian Eus8.0—
RedhatEnterprise Linux For Real Time For Nfv Tus8.0—
RedhatEnterprise Linux For Real Time For Nfv Tus8.2—
RedhatEnterprise Linux For Real Time Tus8.0—
RedhatEnterprise Linux For Real Time Tus8.2—
RedhatEnterprise Linux Server Aus8.2—
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.1—
RedhatEnterprise Linux Server For Power Little Endian Update Services For Sap Solutions8.2—
RedhatEnterprise Linux Server Tus8.2—
RedhatEnterprise Linux Server Update Services For Sap Solutions8.1—
RedhatEnterprise Linux Server Update Services For Sap Solutions8.2—
CanonicalUbuntu Linux14.04—
CanonicalUbuntu Linux16.04—
CanonicalUbuntu Linux18.04—
CanonicalUbuntu Linux20.04—
CanonicalUbuntu Linux22.04—
FedoraprojectFedora35—
NetappSolidfire\, Enterprise Sds \& Hci Storage NodeAll versions—
NetappSolidfire \& Hci Management NodeAll versions—

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-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 unexpectedly.
How severe is CVE-2022-0492?
CVE-2022-0492 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 5.53% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2022-0492?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-0492?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST