Security update for the Linux Kernel RT (Live Patch 4 for SUSE Linux Enterprise 15 SP7)

Announcement ID: SUSE-SU-2026:0145-1
Release Date: 2026-01-17T11:04:25Z
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-2025-39682 ( SUSE ): 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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:
  • SUSE Linux Enterprise Live Patching 15-SP7
  • SUSE Linux Enterprise Real Time 15 SP7
  • SUSE Linux Enterprise Server 15 SP7
  • SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves three vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise kernel 6.4.0-150700.7.16 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-2025-39682: tls: fix handling of zero-length records on the rx_list (bsc#1250192).
  • 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:

  • SUSE Linux Enterprise Live Patching 15-SP7
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-145=1

Package List:

  • SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
    • kernel-livepatch-6_4_0-150700_7_16-rt-5-150700.2.1
    • kernel-livepatch-6_4_0-150700_7_16-rt-debuginfo-5-150700.2.1
    • kernel-livepatch-SLE15-SP7-RT_Update_4-debugsource-5-150700.2.1

References: