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 · 92th percentile
- 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
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. Refreshed daily.