SUSE-SU-2026:3812-1: important: Security update for util-linux

OPENSUSE-SECURITY-UPDATES <[email protected]>
Newsgroups gmane.linux.suse.security.announce
Message-ID <178776308545.9443.3780833480269222728@6f3a8d4f1c47> 
# Security update for util-linux

Announcement ID: SUSE-SU-2026:3812-1  
Release Date: 2026-08-26T10:55:16Z  
Rating: important  
References:

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

  
Cross-References:

  * CVE-2026-13595
  * CVE-2026-27456
  * CVE-2026-53613

  
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:

  * openSUSE Leap 15.4
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  * 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
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP4 LTSS
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for util-linux fixes the following issues:

  * 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).

## 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 Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3812=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-3812=1

  * SUSE Linux Enterprise Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-3812=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-3812=1

  * SUSE Linux Enterprise Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3812=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-3812=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3812=1

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2026-3812=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-3812=1

## Package List:

  * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
    * uuidd-debuginfo-2.37.2-150400.8.50.1
    * libblkid-devel-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libuuid-devel-static-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
    * uuidd-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * libmount-devel-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libblkid-devel-static-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libsmartcols-devel-2.37.2-150400.8.50.1
    * libuuid-devel-2.37.2-150400.8.50.1
    * libfdisk-devel-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64)
    * libuuid1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libmount1-32bit-2.37.2-150400.8.50.1
    * libuuid1-32bit-2.37.2-150400.8.50.1
    * libblkid1-32bit-2.37.2-150400.8.50.1
    * libmount1-32bit-debuginfo-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)
    * util-linux-lang-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
  * openSUSE Leap 15.4 (aarch64_ilp32)
    * libsmartcols1-64bit-2.37.2-150400.8.50.1
    * libsmartcols-devel-64bit-2.37.2-150400.8.50.1
    * libfdisk1-64bit-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-64bit-debuginfo-2.37.2-150400.8.50.1
    * libmount1-64bit-debuginfo-2.37.2-150400.8.50.1
    * libuuid1-64bit-debuginfo-2.37.2-150400.8.50.1
    * libuuid1-64bit-2.37.2-150400.8.50.1
    * libblkid-devel-64bit-2.37.2-150400.8.50.1
    * libfdisk1-64bit-2.37.2-150400.8.50.1
    * libsmartcols1-64bit-debuginfo-2.37.2-150400.8.50.1
    * libmount-devel-64bit-2.37.2-150400.8.50.1
    * libfdisk-devel-64bit-2.37.2-150400.8.50.1
    * libuuid-devel-64bit-2.37.2-150400.8.50.1
    * libmount1-64bit-2.37.2-150400.8.50.1
    * libblkid1-64bit-2.37.2-150400.8.50.1
  * openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)
    * uuidd-debuginfo-2.37.2-150400.8.50.1
    * libblkid-devel-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libuuid-devel-static-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * python3-libmount-debuginfo-2.37.2-150400.8.50.1
    * libfdisk-devel-static-2.37.2-150400.8.50.1
    * libsmartcols-devel-static-2.37.2-150400.8.50.1
    * uuidd-2.37.2-150400.8.50.1
    * libmount-devel-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * python3-libmount-debugsource-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libblkid-devel-static-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * libmount-devel-static-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libsmartcols-devel-2.37.2-150400.8.50.1
    * libuuid-devel-2.37.2-150400.8.50.1
    * python3-libmount-2.37.2-150400.8.50.1
    * libfdisk-devel-2.37.2-150400.8.50.1
  * openSUSE Leap 15.4 (x86_64)
    * libblkid-devel-32bit-2.37.2-150400.8.50.1
    * libfdisk1-32bit-2.37.2-150400.8.50.1
    * libfdisk-devel-32bit-2.37.2-150400.8.50.1
    * libsmartcols-devel-32bit-2.37.2-150400.8.50.1
    * libuuid1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libuuid-devel-32bit-2.37.2-150400.8.50.1
    * libsmartcols1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libmount1-32bit-2.37.2-150400.8.50.1
    * libsmartcols1-32bit-2.37.2-150400.8.50.1
    * libblkid1-32bit-2.37.2-150400.8.50.1
    * libmount-devel-32bit-2.37.2-150400.8.50.1
    * libmount1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libuuid1-32bit-2.37.2-150400.8.50.1
    * libblkid1-32bit-debuginfo-2.37.2-150400.8.50.1
  * openSUSE Leap 15.4 (noarch)
    * util-linux-lang-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (x86_64)
    * libuuid1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libmount1-32bit-2.37.2-150400.8.50.1
    * libblkid1-32bit-2.37.2-150400.8.50.1
    * libmount1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libuuid1-32bit-2.37.2-150400.8.50.1
    * libblkid1-32bit-debuginfo-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
    * uuidd-debuginfo-2.37.2-150400.8.50.1
    * libblkid-devel-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libuuid-devel-static-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
    * uuidd-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * libmount-devel-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libblkid-devel-static-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libsmartcols-devel-2.37.2-150400.8.50.1
    * libuuid-devel-2.37.2-150400.8.50.1
    * libfdisk-devel-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (noarch)
    * util-linux-lang-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
    x86_64)
    * uuidd-debuginfo-2.37.2-150400.8.50.1
    * libblkid-devel-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libuuid-devel-static-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
    * uuidd-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * libmount-devel-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libblkid-devel-static-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libsmartcols-devel-2.37.2-150400.8.50.1
    * libuuid-devel-2.37.2-150400.8.50.1
    * libfdisk-devel-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (x86_64)
    * libuuid1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libmount1-32bit-2.37.2-150400.8.50.1
    * libuuid1-32bit-2.37.2-150400.8.50.1
    * libblkid1-32bit-2.37.2-150400.8.50.1
    * libmount1-32bit-debuginfo-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch)
    * util-linux-lang-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (x86_64)
    * libuuid1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libmount1-32bit-2.37.2-150400.8.50.1
    * libuuid1-32bit-2.37.2-150400.8.50.1
    * libblkid1-32bit-2.37.2-150400.8.50.1
    * libmount1-32bit-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-32bit-debuginfo-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
    x86_64)
    * uuidd-debuginfo-2.37.2-150400.8.50.1
    * libblkid-devel-2.37.2-150400.8.50.1
    * util-linux-2.37.2-150400.8.50.1
    * libsmartcols1-2.37.2-150400.8.50.1
    * libblkid1-debuginfo-2.37.2-150400.8.50.1
    * libuuid-devel-static-2.37.2-150400.8.50.1
    * util-linux-systemd-2.37.2-150400.8.50.1
    * libsmartcols1-debuginfo-2.37.2-150400.8.50.1
    * libmount1-2.37.2-150400.8.50.1
    * uuidd-2.37.2-150400.8.50.1
    * libuuid1-2.37.2-150400.8.50.1
    * libmount-devel-2.37.2-150400.8.50.1
    * util-linux-systemd-debugsource-2.37.2-150400.8.50.1
    * libblkid-devel-static-2.37.2-150400.8.50.1
    * libuuid1-debuginfo-2.37.2-150400.8.50.1
    * libmount1-debuginfo-2.37.2-150400.8.50.1
    * libblkid1-2.37.2-150400.8.50.1
    * util-linux-debugsource-2.37.2-150400.8.50.1
    * libfdisk1-2.37.2-150400.8.50.1
    * util-linux-debuginfo-2.37.2-150400.8.50.1
    * libfdisk1-debuginfo-2.37.2-150400.8.50.1
    * util-linux-systemd-debuginfo-2.37.2-150400.8.50.1
    * libsmartcols-devel-2.37.2-150400.8.50.1
    * libuuid-devel-2.37.2-150400.8.50.1
    * libfdisk-devel-2.37.2-150400.8.50.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch)
    * util-linux-lang-2.37.2-150400.8.50.1

## 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-2026-53613.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
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