Improper Privilege Management Affecting libmount package, versions <0:2.40.2-18.el10_2.20


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-ALMALINUX10-LIBMOUNT-22149327
  • published3 Nov 2026
  • disclosed2 Nov 2026

Introduced: 2 Nov 2026

NewCVE-2026-53614  (opens in a new tab)
CWE-269  (opens in a new tab)
CWE-807  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 libmount to version 0:2.40.2-18.el10_2.20 or higher.
This issue was patched in ALSA-2026:93461.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libmount package and not the libmount package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 relevant fixed versions and status.

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 Base Scores

version 3.1