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Alerts This Week
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Fedora 44 Util-linux Critical Libmount TOCTOU SUID Fixes 2026-c70cb96ff1

fedora
Calendar Grey June 18, 2026
Dist Fedora Esm H88
Update for util-linux on Fedora 44 addressing critical issues to prevent security threats and maintain system integrity.
upstream upgrade with security fixes: CVE-2026-53612 - libmount: TOCTOU attack via ancestor directory swap during mount CVE-2026-53613 - libmount: SUID bypass via LIBMOUNT_FORCE_MO...

Summary

The util-linux package contains a large variety of low-level system

utilities that are necessary for a Linux system to function. Among

others, util-linux contains the fdisk configuration tool and the login

program.

Update Information:

upstream upgrade with security fixes: CVE-2026-53612 - libmount: TOCTOU attack via ancestor directory swap during mount CVE-2026-53613 - libmount: SUID bypass via LIBMOUNT_FORCE_MOUNT2 and legacy mount path CVE-2026-53614 - libmount: fd_target TOCTOU prevention

Topics%20covered

Topics Covered

security advisory fedora util-linux CVE-2026-53612 libmount attack TOCTOU attack

Change Log

* Tue Jun 16 2026 Karel Zak - 2.41.5-1 - upgrade to upstream release v2.41.5

References

Fedora Update Notification FEDORA-2026-c70cb96ff1 2026-06-19 00:59:07.048660+00:00 Name : util-linux Product : Fedora 44 Version : 2.41.5 Release : 1.fc44 URL : https://en.wikipedia.org/wiki/Util-linux Summary : Collection of basic system utilities Description : The util-linux package contains a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, util-linux contains the fdisk configuration tool and the login program.

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-c70cb96ff1' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
Lowest
Low
Medium
High
Critical

Name: util-linux
Product: Fedora 44
Version: 2.41.5
Release: 1.fc44
URL: https://en.wikipedia.org/wiki/Util-linux
Summary: Collection of basic system utilities

Topics%20covered

Topics Covered

security advisory fedora util-linux CVE-2026-53612 libmount attack TOCTOU attack

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