SUSE-SU-2026:1802-1: important: Security update for the Linux Kernel (Live Patch 21 for SUSE Linux Enterprise 15 SP6)

[SLE-SECURITY-UPDATES]

# Security update for the Linux Kernel (Live Patch 21 for SUSE Linux Enterprise
15 SP6)

Announcement ID: SUSE-SU-2026:1802-1  
Release Date: 2026-05-09T13:05:31Z  
Rating: important  
References:

  * bsc#1263689

  
Cross-References:

  * CVE-2026-31431

  
CVSS scores:

  * 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 15.5
  * openSUSE Leap 15.6
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise Live Patching 15-SP5
  * SUSE Linux Enterprise Live Patching 15-SP6
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Real Time 15 SP5
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for the SUSE Linux Enterprise kernel 6.4.0-150600.23.92 fixes one
security issue

The following security issue was fixed:

  * 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:

  * openSUSE Leap 15.5  
    zypper in -t patch SUSE-2026-1802=1 SUSE-2026-1803=1

  * SUSE Linux Enterprise Live Patching 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-1802=1 SUSE-SLE-
Module-Live-Patching-15-SP5-2026-1803=1

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-1797=1

  * SUSE Linux Enterprise Live Patching 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-1797=1

## Package List:

  * openSUSE Leap 15.5 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150500_55_144-default-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_144-default-debuginfo-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_141-default-debuginfo-2-150500.2.1
    * kernel-livepatch-SLE15-SP5_Update_36-debugsource-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_141-default-2-150500.2.1
    * kernel-livepatch-SLE15-SP5_Update_37-debugsource-2-150500.2.1
  * SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150500_55_144-default-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_144-default-debuginfo-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_141-default-debuginfo-2-150500.2.1
    * kernel-livepatch-SLE15-SP5_Update_36-debugsource-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_141-default-2-150500.2.1
    * kernel-livepatch-SLE15-SP5_Update_37-debugsource-2-150500.2.1
  * openSUSE Leap 15.6 (ppc64le s390x x86_64)
    * kernel-livepatch-6_4_0-150600_23_92-default-debuginfo-2-150600.2.1
    * kernel-livepatch-SLE15-SP6_Update_21-debugsource-2-150600.2.1
    * kernel-livepatch-6_4_0-150600_23_92-default-2-150600.2.1
  * SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
    * kernel-livepatch-6_4_0-150600_23_92-default-debuginfo-2-150600.2.1
    * kernel-livepatch-SLE15-SP6_Update_21-debugsource-2-150600.2.1
    * kernel-livepatch-6_4_0-150600_23_92-default-2-150600.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-31431.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1263689

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