SUSE-SU-2026:2553-1: important: Security update for the Linux Kernel (Live Patch 26 for SUSE Linux Enterprise 15 SP6)

[SLE-UPDATES]

# Security update for the Linux Kernel (Live Patch 26 for SUSE Linux Enterprise
15 SP6)

Announcement ID: SUSE-SU-2026:2553-1  
Release Date: 2026-06-23T11:34:46Z  
Rating: important  
References:

  * bsc#1266229
  * bsc#1268282

  
Cross-References:

  * CVE-2026-43503
  * CVE-2026-46323

  
CVSS scores:

  * CVE-2026-43503 ( 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-2026-43503 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43503 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-46323 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46323 ( 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 15.6
  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Live Patching 12-SP5
  * SUSE Linux Enterprise Live Patching 15-SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5
  * 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 6.4.0-150600.23.112 fixes
various security issues

The following security issues were fixed:

  * CVE-2026-43503: final dirty.frag related fixes (bsc#1266229).
  * CVE-2026-46323: net: gro: don't merge zcopy skbs (bsc#1268282).

## 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-SP6-2026-2526=1

  * SUSE Linux Enterprise Live Patching 12-SP5  
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2026-2553=1

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-2526=1

## Package List:

  * SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64)
    * kgraft-patch-4_12_14-122_310-default-2-2.1
  * SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
    * kernel-livepatch-6_4_0-150600_23_112-default-debuginfo-2-150600.2.1
    * kernel-livepatch-6_4_0-150600_23_112-default-2-150600.2.1
    * kernel-livepatch-SLE15-SP6_Update_26-debugsource-2-150600.2.1
  * openSUSE Leap 15.6 (ppc64le s390x x86_64)
    * kernel-livepatch-6_4_0-150600_23_112-default-debuginfo-2-150600.2.1
    * kernel-livepatch-6_4_0-150600_23_112-default-2-150600.2.1
    * kernel-livepatch-SLE15-SP6_Update_26-debugsource-2-150600.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-43503.html
  * https://www.suse.com/security/cve/CVE-2026-46323.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1266229
  * https://bugzilla.suse.com/show_bug.cgi?id=1268282

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