Linux Kernel Improper Authentication Vulnerability
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.
MANARTECH SECURITY ALERT
Linux Kernel Improper Authentication Vulnerability
CVE Numbers
CVE-2022-0492
Affected Product
Kernel — Linux
Threat 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.
Severity Scale
CRITICALHIGHMEDIUMLOW
Severity
HIGH
Affected Versions
To be reviewed
Recommended Mitigation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Reference Links
http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html
http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html
https://bugzilla.redhat.com/show_bug.cgi?id=2051505
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af
https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://security.netapp.com/advisory/ntap-20220419-0002/
https://www.debian.org/security/2022/dsa-5095
https://www.debian.org/security/2022/dsa-5096
http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html
http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
http://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html
https://bugzilla.redhat.com/show_bug.cgi?id=2051505
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af
https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://security.netapp.com/advisory/ntap-20220419-0002/
https://www.debian.org/security/2022/dsa-5095
https://www.debian.org/security/2022/dsa-5096
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0492
https://nvd.nist.gov/vuln/detail/CVE-2022-0492