SUSE-SU-2026:20308-1: moderate: Security update for systemd

[SLE-SECURITY-UPDATES]

# Security update for systemd

Announcement ID: SUSE-SU-2026:20308-1  
Release Date: 2025-08-12T14:05:24Z  
Rating: moderate  
References:

  * bsc#1242827
  * bsc#1243935
  * bsc#1247074

  
Cross-References:

  * CVE-2025-4598

  
CVSS scores:

  * CVE-2025-4598 ( SUSE ):  4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
  * CVE-2025-4598 ( 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 6.0
  * SUSE Linux Micro Extras 6.0

  
  
An update that solves one vulnerability and has two fixes can now be installed.

## Description:

This update for systemd fixes the following issues:

  * Remove the script used to help migrating the language and locale settings
    located in /etc/sysconfig/language on old systems to the systemd default
    locations (bsc#1247074)

The script was introduced more than 7 years ago and all systems running TW
should have been migrated since then. Moreover the installer supports the
systemd default locations since approximately SLE15.

  * triggers.systemd: skip update of hwdb, journal-catalog if executed during an
    offline update.

  * logs-show: get timestamp and boot ID only when necessary (bsc#1242827)

  * sd-journal: drop to use Hashmap to manage journal files per boot ID
  * tree-wide: set SD_JOURNAL_ASSUME_IMMUTABLE where appropriate
  * sd-journal: introduce SD_JOURNAL_ASSUME_IMMUTABLE flag
  * sd-journal: make journal_file_read_tail_timestamp() notify to the caller
    that some new journal entries added
  * sd-journal: cache last entry offset and journal file state
  * sd-journal: fix typo in function name

  * coredump: use %d in kernel core pattern (bsc#1243935 CVE-2025-4598)

## 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 Micro Extras 6.0  
    zypper in -t patch SUSE-SLE-Micro-Extras-6.0-416=1

## Package List:

  * SUSE Linux Micro Extras 6.0 (aarch64 ppc64le s390x x86_64)
    * systemd-devel-254.27-1.1
    * systemd-debugsource-254.27-1.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-4598.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1242827
  * https://bugzilla.suse.com/show_bug.cgi?id=1243935
  * https://bugzilla.suse.com/show_bug.cgi?id=1247074

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