Security update for the Linux Kernel (Live Patch 16 for SUSE Linux Enterprise 15 SP6)

Announcement ID: SUSE-SU-2026:0204-1
Release Date: 2026-01-21T13:33:36Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2023-53676 ( SUSE ): 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • CVE-2023-53676 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-40204 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • CVE-2025-40204 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products:
  • openSUSE Leap 15.6
  • SUSE Linux Enterprise Live Patching 15-SP6
  • SUSE Linux Enterprise Real Time 15 SP6
  • SUSE Linux Enterprise Server 15 SP6
  • SUSE Linux Enterprise Server for SAP Applications 15 SP6

An update that solves two vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise kernel 6.4.0-150600.23.73 fixes various security issues

The following security issues were fixed:

  • CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() (bsc#1251787).
  • CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437).

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:

  • openSUSE Leap 15.6
    zypper in -t patch SUSE-2026-204=1
  • SUSE Linux Enterprise Live Patching 15-SP6
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-204=1

Package List:

  • openSUSE Leap 15.6 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP6_Update_16-debugsource-2-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_73-default-debuginfo-2-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_73-default-2-150600.2.1
  • SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP6_Update_16-debugsource-2-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_73-default-debuginfo-2-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_73-default-2-150600.2.1

References: