Security update for systemd

Announcement ID: SUSE-SU-2026:0991-1
Release Date: 2026-03-24T07:23:04Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-4105 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-4105 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-4105 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise High Performance Computing 12 SP5
  • SUSE Linux Enterprise Server 12 SP5
  • SUSE Linux Enterprise Server 12 SP5 LTSS
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  • SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves one vulnerability and has one security fix can now be installed.

Description:

This update for systemd fixes the following issue:

  • CVE-2026-4105: privilege escalation due to improper access control in RegisterMachine D-Bus method (bsc#1259650).
  • udev: check for invalid chars in various fields received from the kernel (bsc#1259697).

Changelog:

cbf8ee66ee machined: reject invalid class types when registering machines 1a55ad48da udev: fix review mixup 1eba76668c udev-builtin-net-id: print cescaped bad attributes cbd4b55380 udev: ensure tag parsing stays within bounds 5973d3b1cc udev: ensure there is space for trailing NUL before calling sprintf f038eb6c8b udev: check for invalid chars in various fields received from the kernel

Special Instructions and Notes:

  • Please reboot the system after installing this update.

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 12 SP5 LTSS
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-991=1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-991=1

Package List:

  • SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    • systemd-devel-228-157.75.1
    • udev-228-157.75.1
    • libudev-devel-228-157.75.1
    • udev-debuginfo-228-157.75.1
    • libudev1-debuginfo-228-157.75.1
    • systemd-sysvinit-228-157.75.1
    • libudev1-228-157.75.1
    • systemd-debugsource-228-157.75.1
    • libsystemd0-228-157.75.1
    • systemd-228-157.75.1
    • libsystemd0-debuginfo-228-157.75.1
    • systemd-debuginfo-228-157.75.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    • systemd-bash-completion-228-157.75.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS (s390x x86_64)
    • libudev1-32bit-228-157.75.1
    • systemd-debuginfo-32bit-228-157.75.1
    • libsystemd0-debuginfo-32bit-228-157.75.1
    • systemd-32bit-228-157.75.1
    • libudev1-debuginfo-32bit-228-157.75.1
    • libsystemd0-32bit-228-157.75.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    • systemd-devel-228-157.75.1
    • libudev1-32bit-228-157.75.1
    • udev-228-157.75.1
    • libudev-devel-228-157.75.1
    • udev-debuginfo-228-157.75.1
    • systemd-debuginfo-32bit-228-157.75.1
    • libudev1-debuginfo-228-157.75.1
    • systemd-sysvinit-228-157.75.1
    • systemd-32bit-228-157.75.1
    • libudev1-228-157.75.1
    • systemd-debugsource-228-157.75.1
    • libsystemd0-debuginfo-32bit-228-157.75.1
    • libsystemd0-228-157.75.1
    • systemd-228-157.75.1
    • libudev1-debuginfo-32bit-228-157.75.1
    • libsystemd0-debuginfo-228-157.75.1
    • systemd-debuginfo-228-157.75.1
    • libsystemd0-32bit-228-157.75.1
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    • systemd-bash-completion-228-157.75.1

References: