Detection of Error Condition Without Action Affecting util-linux package, versions <2.41.6-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.22% (11th percentile)

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  • Snyk IDSNYK-ALPINE322-UTILLINUX-19533454
  • published5 Sept 2026
  • disclosed3 Sept 2026

Introduced: 3 Sep 2026

CVE-2026-76642  (opens in a new tab)
CWE-390  (opens in a new tab)

How to fix?

Upgrade Alpine:3.22 util-linux to version 2.41.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream util-linux package and not the util-linux package as distributed by Alpine. See How to fix? for Alpine:3.22 relevant fixed versions and status.

util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with inherited suid bits or modify target inode permissions after a helper fails, achieving privilege escalation.

CVSS Base Scores

version 3.1