Time-of-check Time-of-use (TOCTOU) Affecting util-linux-tty-tools package, versions <2.41.1-160000.5.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-SLES1600-UTILLINUXTTYTOOLS-20187352
  • published28 Sept 2026
  • disclosed22 Sept 2026

Introduced: 22 Sep 2026

NewCVE-2026-78410  (opens in a new tab)
CWE-367  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 util-linux-tty-tools to version 2.41.1-160000.5.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream util-linux-tty-tools package and not the util-linux-tty-tools package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount(8) to bind another host directory. If the fstab entry also sets X-mount.owner, X-mount.group, or X-mount.mode, root then changes ownership or mode on that redirected inode.

CVSS Base Scores

version 3.1