SUSE-SU-2026:23255-1: important: Security update for util-linux

[SLE-SECURITY-UPDATES]

# Security update for util-linux

Announcement ID: SUSE-SU-2026:23255-1  
Release Date: 2026-08-24T15:02:22Z  
Rating: important  
References:

  * bsc#1261606
  * bsc#1268886
  * bsc#1269583
  * bsc#1270219

  
Cross-References:

  * CVE-2026-13595
  * CVE-2026-27456
  * CVE-2026-53612
  * CVE-2026-53613
  * CVE-2026-53614

  
CVSS scores:

  * CVE-2026-13595 ( SUSE ):  6.9
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-13595 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-13595 ( NVD ):  6.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-13595 ( NVD ):  5.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-27456 ( SUSE ):  4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-27456 ( NVD ):  4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

  
Affected Products:

  * SUSE Linux Micro 6.1

  
  
An update that solves five vulnerabilities can now be installed.

## Description:

This update for util-linux fixes the following issues:

Security issues fixed:

  * CVE-2026-13595: heap use-after-free read in `libblkid` nested partition
    probing (bsc#1269583).
  * CVE-2026-27456: TOCTOU race condition in the mount program when setting up
    loop devices (bsc#1261606).
  * Several security issues in releases prior to v2.42.2 and v2.41.5
    (bsc#1268886).

Other updates and bugfixes:

  * Ignore `pam-config` error that prevents update failure if `common*` pam
    configuration is not symlink to `common-*-pc` (bsc#1270219).

## 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 Micro 6.1  
    zypper in -t patch SUSE-SLE-Micro-6.1-682=1

## Package List:

  * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
    * util-linux-systemd-debuginfo-2.40.4-slfo.1.1_7.1
    * libfdisk1-2.40.4-slfo.1.1_7.1
    * libuuid1-2.40.4-slfo.1.1_7.1
    * util-linux-systemd-2.40.4-slfo.1.1_7.1
    * libsmartcols1-debuginfo-2.40.4-slfo.1.1_7.1
    * libblkid1-debuginfo-2.40.4-slfo.1.1_7.1
    * util-linux-2.40.4-slfo.1.1_7.1
    * util-linux-debuginfo-2.40.4-slfo.1.1_7.1
    * libmount1-2.40.4-slfo.1.1_7.1
    * lastlog2-2.40.4-slfo.1.1_7.1
    * liblastlog2-2-debuginfo-2.40.4-slfo.1.1_7.1
    * util-linux-systemd-debugsource-2.40.4-slfo.1.1_7.1
    * libuuid1-debuginfo-2.40.4-slfo.1.1_7.1
    * libblkid1-2.40.4-slfo.1.1_7.1
    * lastlog2-debuginfo-2.40.4-slfo.1.1_7.1
    * util-linux-debugsource-2.40.4-slfo.1.1_7.1
    * libsmartcols1-2.40.4-slfo.1.1_7.1
    * libmount1-debuginfo-2.40.4-slfo.1.1_7.1
    * libfdisk1-debuginfo-2.40.4-slfo.1.1_7.1
    * liblastlog2-2-2.40.4-slfo.1.1_7.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-13595.html
  * https://www.suse.com/security/cve/CVE-2026-27456.html
  * https://www.suse.com/security/cve/CVE-2026-53612.html
  * https://www.suse.com/security/cve/CVE-2026-53613.html
  * https://www.suse.com/security/cve/CVE-2026-53614.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261606
  * https://bugzilla.suse.com/show_bug.cgi?id=1268886
  * https://bugzilla.suse.com/show_bug.cgi?id=1269583
  * https://bugzilla.suse.com/show_bug.cgi?id=1270219

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