CVE-2026-78408

The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve. Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an...

PT-2026-84764

Name of the Vulnerable Software and Affected Versions util-linux affected versions not specified Description The nsenter tool contains an issue where the --join-cgroup option opens the target cgroup.procs file as root and maintains that file descriptor during subsequent namespace and credential...