CVE-2026-53614 (GCVE-0-2026-53614)
Vulnerability from cvelistv5
Published
2026-10-14 15:40
Modified
2026-10-15 15:08
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-269 - Improper Privilege Management
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Summary
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.
References
Impacted products
Vendor Product Version
util-linux util-linux Version: >= 2.39.1, < 2.41.5
Version: >= 2.42, < 2.42.2
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