CVE-2022-0492
Linux Kernel Improper Authentication Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 5 June 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.53% probability · 93th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 2 June 2026 · due 5 June 2026
- Weakness
- CWE-287, CWE-862
- Affected
- netapp/h300s firmware · netapp/h410c firmware · netapp/h410s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/bootstrap os · linux/linux kernel · debian/debian linux · redhat/codeready linux builder · redhat/codeready linux builder for power little endian · redhat/virtualization host · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux for ibm z systems · redhat/enterprise linux for ibm z systems eus · redhat/enterprise linux for power little endian · redhat/enterprise linux for power little endian eus · redhat/enterprise linux for real time for nfv tus · redhat/enterprise linux for real time tus · redhat/enterprise linux server aus · +7 more
- Source
- secalert@redhat.com
EPSS 5.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af ; https://www.kernel.org/ ; https://nvd.nist.gov/vuln/detail/CVE-2022-0492
References
- http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.htmlExploit, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=2051505Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02afPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220419-0002/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5095Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.htmlExploit, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=2051505Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02afPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220419-0002/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5095Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0492US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.