SUSE-SU-2026:20276-1: important: Security update for the Linux Kernel (Live Patch 5 for SUSE Linux Enterprise Micro 6.0)

Fri Feb 13 22:32:01 UTC 2026

# Security update for the Linux Kernel (Live Patch 5 for SUSE Linux Enterprise
Micro 6.0)

Announcement ID: SUSE-SU-2026:20276-1  
Release Date: 2026-01-29T11:04:33Z  
Rating: important  
References:

  * bsc#1249241
  * bsc#1256928

Cross-References:

  * CVE-2025-38588

CVSS scores:

  * CVE-2025-38588 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-38588 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38588 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products:

  * SUSE Linux Micro 6.0

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

## Description:

This update for the SUSE Linux Enterprise kernel 6.4.0-25.1 fixes one security
issue

The following security issue was fixed:

  * CVE-2025-38588: ipv6: prevent infinite loop in rt6_nlmsg_size()
    (bsc#1249241).

The following non security issue was fixed:

  * fix addr_bit_set() issue on big-endian machines (bsc#1256928).

## 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 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-kernel-255=1

## Package List:

  * SUSE Linux Micro 6.0 (s390x x86_64)
    * kernel-livepatch-6_4_0-25-default-14-1.2
    * kernel-livepatch-MICRO-6-0_Update_5-debugsource-14-1.2
    * kernel-livepatch-6_4_0-25-default-debuginfo-14-1.2

## References:

  * https://www.suse.com/security/cve/CVE-2025-38588.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1249241
  * https://bugzilla.suse.com/show_bug.cgi?id=1256928

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