Linux Kernel Improper Authentication Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 02/06/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| codeready linux builder | = 8.0= 8.2 | |
| codeready linux builder for power little endian | = 8.0= 8.2 | |
| virtualization host | = 4.0 |
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.
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