Symlink Attack Affecting util-linux package, versions [,2.41.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-UTILLINUX-15992607
- published12 Apr 2026
- disclosed3 Apr 2026
- creditT0X1Cx
Introduced: 3 Apr 2026
CVE-2026-27456 (opens in a new tab)How to fix?
Upgrade util-linux to version 2.41.4 or higher.
Overview
Affected versions of this package are vulnerable to Symlink Attack in the mount process when setting up loop devices. An attacker can gain unauthorized read access to root-protected files and block devices by exploiting a race window between path validation and file opening, replacing the source file with a symlink to a sensitive file. This is only exploitable if there is an /etc/fstab entry with user,loop options pointing to a directory writable by the attacker and if the SUID bit is set on /usr/bin/mount.