CVE-2026-53612

util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID mount utility's hookowner.c post-mount hook performs path-based chmod and lchown operations on a previously validated mount target. A local low-privileged user authorized by a...

UBUNTU-CVE-2026-53612

Local Privilege Escalation via TOCTOU in mount8 hookowner.c chmod/chown...

CVE-2026-53612

Local Privilege Escalation via TOCTOU in mount8 hookowner.c chmod/chown...

PT-2026-53078

Name of the Vulnerable Software and Affected Versions openSUSE Tumbleweed versions prior to libblkid-devel-2.42.2-1.1 Description A local privilege escalation exists due to a Time-of-Check to Time-of-Use TOCTOU race condition in the mount8 utility within the hook owner.c file during chmod and cho...