Security update for the Linux Kernel (Live Patch 17 for SUSE Linux Enterprise Micro 6.0)

Announcement ID: SUSE-SU-2026:21488-1
Release Date: 2026-05-05T13:15:02Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-23204 ( SUSE ): 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • CVE-2026-23204 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-23204 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  • CVE-2026-23204 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  • CVE-2026-31431 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-31431 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Micro 6.0

An update that solves two vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-40.1 fixes various security issues

The following security issues were fixed:

  • CVE-2026-23204: net/sched: cls_u32: use skb_header_pointer_careful() (bsc#1259126).
  • CVE-2026-31431: crypto: algif_aead - Revert to operating out-of-place (bsc#1263689).

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-395=1

Package List:

  • SUSE Linux Micro 6.0 (s390x x86_64)
    • kernel-livepatch-6_4_0-40-default-3-1.1
    • kernel-livepatch-6_4_0-40-default-debuginfo-3-1.1
    • kernel-livepatch-MICRO-6-0_Update_17-debugsource-3-1.1

References: