CVE-2022-0492
Linux Kernel Improper Authentication Vulnerability
- High 7.8
- Exploited: added to CISA KEV 2 Jun 2026
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.
Key facts
- Published
- 3 Mar 2022
- Last changed
- 3 Jun 2026
- Assigned by
- redhat
- KEV added
- 2 Jun 2026
- KEV fix due
- 5 Jun 2026
- EPSS
- 5.528% likely to be exploited in the next 30 days, higher than 92.941% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
What to do
- 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 KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | kernel |
|
Timeline
- 3 Mar 2022 Published
- 2 Jun 2026 CVE-2022-0492 added to CISA KEV
- 2 Jun 2026 Added to the CISA KEV catalogue