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 breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
References
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2051505
- MISChttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- VENDOR_ADVISORYhttps://www.debian.org/security/2022/dsa-5095
- VENDOR_ADVISORYhttps://www.debian.org/security/2022/dsa-5096
- EXPLOIThttp://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html
- MISChttps://security.netapp.com/advisory/ntap-20220419-0002/
- EXPLOIThttp://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html
- EXPLOIThttp://packetstormsecurity.com/files/176099/Docker-cgroups-Container-Escape.html