Security update for the Linux Kernel (Live Patch 20 for SUSE Linux Enterprise 15 SP6)

Announcement ID: SUSE-SU-2026:1735-1
Release Date: 2026-05-07T02:34:47Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2025-71066 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-23004 ( 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-2026-23004 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-23004 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-23004 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • 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:
  • openSUSE Leap 15.4
  • openSUSE Leap 15.6
  • SUSE Linux Enterprise High Performance Computing 15 SP4
  • SUSE Linux Enterprise Live Patching 15-SP4
  • SUSE Linux Enterprise Live Patching 15-SP6
  • SUSE Linux Enterprise Micro 5.3
  • SUSE Linux Enterprise Micro 5.4
  • SUSE Linux Enterprise Real Time 15 SP4
  • SUSE Linux Enterprise Real Time 15 SP6
  • SUSE Linux Enterprise Server 15 SP4
  • SUSE Linux Enterprise Server 15 SP6
  • SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • SUSE Linux Enterprise Server for SAP Applications 15 SP6

An update that solves four vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise kernel 6.4.0-150600.23.87 fixes various security issues

The following security issues were fixed:

  • CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1258005).
  • CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() (bsc#1258655).
  • 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 Enterprise Live Patching 15-SP6
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-1727=1
  • openSUSE Leap 15.4
    zypper in -t patch SUSE-2026-1735=1
  • SUSE Linux Enterprise Live Patching 15-SP4
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-1735=1
  • openSUSE Leap 15.6
    zypper in -t patch SUSE-2026-1727=1

Package List:

  • SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP6_Update_20-debugsource-4-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_87-default-4-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_87-default-debuginfo-4-150600.2.1
  • openSUSE Leap 15.4 (ppc64le s390x x86_64)
    • kernel-livepatch-5_14_21-150400_24_194-default-debuginfo-4-150400.2.1
    • kernel-livepatch-SLE15-SP4_Update_48-debugsource-4-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_194-default-4-150400.2.1
  • SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    • kernel-livepatch-5_14_21-150400_24_194-default-debuginfo-4-150400.2.1
    • kernel-livepatch-SLE15-SP4_Update_48-debugsource-4-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_194-default-4-150400.2.1
  • openSUSE Leap 15.6 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP6_Update_20-debugsource-4-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_87-default-4-150600.2.1
    • kernel-livepatch-6_4_0-150600_23_87-default-debuginfo-4-150600.2.1

References: