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openSUSE Leap 15.4 Util-linux Moderate TOCTOU Issue 2026-2653-1

opensuse
Calendar Grey June 26, 2026
Dist Opensuse Esm H88
Moderate update available for openSUSE to address a TOCTOU issue in util-linux affecting loop devices.
An update that solves one vulnerability can now be installed.

Description

This update for util-linux fixes the following issue

* CVE-2026-27456: TOCTOU in the mount program when setting up loop devices

(bsc#1261606).

Topics%20covered

Topics Covered

security advisory moderate DoS util-linux OpenSUSE mount program

Patch

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like

YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

* SUSE Linux Enterprise Micro for Rancher 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-2653=1

* SUSE Linux Enterprise Micro 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-2653=1

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-2653=1

* SUSE Linux Enterprise Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2653=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2653=1

Package List

* openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)

* libfdisk1-2.37.2-150400.8.47.1

* python3-libmount-debuginfo-2.37.2-150400.8.47.1

* libmount1-2.37.2-150400.8.47.1

* libuuid-devel-2.37.2-150400.8.47.1

* python3-libmount-2.37.2-150400.8.47.1

* libuuid1-debuginfo-2.37.2-150400.8.47.1

* util-linux-systemd-2.37.2-150400.8.47.1

* libblkid1-debuginfo-2.37.2-150400.8.47.1

* libsmartcols-devel-static-2.37.2-150400.8.47.1

* libblkid-devel-static-2.37.2-150400.8.47.1

* uuidd-2.37.2-150400.8.47.1

* libmount1-debuginfo-2.37.2-150400.8.47.1

* python3-libmount-debugsource-2.37.2-150400.8.47.1

* libsmartcols1-2.37.2-150400.8.47.1

* libfdisk1-debuginfo-2.37.2-150400.8.47.1

* libfdisk-devel-2.37.2-150400.8.47.1

* libsmartcols1-debuginfo-2.37.2-150400.8.47.1

* util-linux-debugsource-2.37.2-150400.8.47.1

* util-linux-systemd-debugsource-2.37.2-150400.8.47.1

* libblkid-devel-2.37.2-150400.8.47.1

* libuuid1-2.37.2-150400.8.47.1

* libsmartcols-devel-2.37.2-150400.8.47.1

* libuuid-devel-static-2.37.2-150400.8.47.1

*...

Read the Full Advisory

References

* bsc#1261606

## References:

* https://www.suse.com/security/cve/CVE-2026-27456.html

* https://bugzilla.suse.com/show_bug.cgi?id=1261606

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2653-1
Release Date: 2026-06-26T12:22:43Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4

Topics%20covered

Topics Covered

security advisory moderate DoS util-linux OpenSUSE mount program

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