A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function.
The Linux kernel cgroup-v1 subsystem does not properly restrict access to the release-agent feature. Fixed in kernel 5.10.103-1.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 5.10.103-1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The Linux kernel's cgroup v1 release_agent feature, implemented in the cgroup_release_agent_write function, is affected by this flaw. Under certain conditions, it can allow a local user to escalate privileges and bypass namespace isolation.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- Record last updated
- CISA remediation deadline
Due date for US federal agencies to patch
Affected versions
- n/a kernel
kernel 5.17 rc3
References 10
bugzilla.redhat.com
git.kernel.org
packetstormsecurity.com
security.netapp.com
Questions about CVE-2022-0492
What does this mean?
The cgroup-v1 subsystem does not properly restrict access to the release-agent feature. A local user can use this flaw to escalate privileges and bypass namespace isolation.Source: lists.debian.org
Am I affected, and how do I check?
The source does not list affected version ranges. To check a system, run uname -r to get the kernel version and compare it with the fixed release, 5.10.103-1.Source: lists.debian.org
What should I do about it?
Upgrade the Linux kernel to version 5.10.103-1 or later.Source: lists.debian.org
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-06-02, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data