CVE-2026-53614
highutil-linux is a random collection of Linux utilities.
util-linux is a random collection of Linux utilities. In util-linux 2.39.1 through 2.41.4 and 2.42 through 2.42.1, the SUID `mount` utility reads the attacker-controlled `LIBMOUNT_FORCE_MOUNT2` environment variable with `getenv()`, allowing a local low-privileged user to force the non-atomic legacy bind-mount path. With an `/etc/fstab` bind mount authorized by `user` or `users` and protected by `nosuid`, `noexec`, or `nodev`, an attacker can race the window between the initial bind mount and the remount that applies those security flags and execute a SUID program from the temporarily unprotected mount, potentially gaining root privileges. This issue is fixed in 2.41.5 and 2.42.2.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/util-linux/util-linux/commit/31e37c1c7dcf25b76ccf41391fe934a75644c661 security-advisories@github.com
- https://github.com/util-linux/util-linux/commit/53ff0fcdab12d69c60c971c69a3d0d173fa46ca9 security-advisories@github.com
- https://github.com/util-linux/util-linux/commit/9cbfb823500f510b34767edabd3ffd5b436987b4 security-advisories@github.com
- https://github.com/util-linux/util-linux/commit/cc81bbcec598cb91f0eb8456282f33eed820ed5f security-advisories@github.com
- https://github.com/util-linux/util-linux/commit/fd6b4d94ff013dc7ed680d4e864610da5b9751f1 security-advisories@github.com
- https://github.com/util-linux/util-linux/releases/tag/v2.41.5 security-advisories@github.com
- https://github.com/util-linux/util-linux/releases/tag/v2.42.2 security-advisories@github.com
- https://github.com/util-linux/util-linux/security/advisories/GHSA-67r7-8m5w-22wx security-advisories@github.com