SUSE-SU-2026:1778-1: important: Security update for the Linux Kernel

[SLE-SECURITY-UPDATES]

# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:1778-1  
Release Date: 2026-05-08T15:20:23Z  
Rating: important  
References:

  * bsc#1264449
  * bsc#1264450

  
Cross-References:

  * CVE-2026-43284
  * CVE-2026-43500

  
CVSS scores:

  * CVE-2026-43284 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43284 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43500 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

  
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
  * SUSE Real Time Module 15-SP7

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to fix the following
issue:

This fixes the DirtyFrag issues:

  * CVE-2026-43284: xfrm: esp: avoid in-place decrypt on shared skb frags
    (bsc#1264449).
  * CVE-2026-43500: rxrpc and afs modules are disabled (bsc#1264450)

## Special Instructions and Notes:

  * Please reboot the system after installing this update.

## 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-SP7-2026-1778=1

  * SUSE Real Time Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-RT-15-SP7-2026-1778=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
    * kernel-livepatch-SLE15-SP7-RT_Update_13-debugsource-1-150700.1.3.1
    * kernel-livepatch-6_4_0-150700_7_44-rt-1-150700.1.3.1
    * kernel-livepatch-6_4_0-150700_7_44-rt-debuginfo-1-150700.1.3.1
  * SUSE Real Time Module 15-SP7 (x86_64)
    * kernel-rt-debuginfo-6.4.0-150700.7.44.1
    * ocfs2-kmp-rt-debuginfo-6.4.0-150700.7.44.1
    * kernel-rt-devel-6.4.0-150700.7.44.1
    * cluster-md-kmp-rt-6.4.0-150700.7.44.1
    * ocfs2-kmp-rt-6.4.0-150700.7.44.1
    * dlm-kmp-rt-debuginfo-6.4.0-150700.7.44.1
    * gfs2-kmp-rt-debuginfo-6.4.0-150700.7.44.1
    * cluster-md-kmp-rt-debuginfo-6.4.0-150700.7.44.1
    * kernel-rt-debugsource-6.4.0-150700.7.44.1
    * kernel-rt-devel-debuginfo-6.4.0-150700.7.44.1
    * gfs2-kmp-rt-6.4.0-150700.7.44.1
    * dlm-kmp-rt-6.4.0-150700.7.44.1
    * kernel-syms-rt-6.4.0-150700.7.44.1
  * SUSE Real Time Module 15-SP7 (noarch)
    * kernel-source-rt-6.4.0-150700.7.44.1
    * kernel-devel-rt-6.4.0-150700.7.44.1
  * SUSE Real Time Module 15-SP7 (nosrc x86_64)
    * kernel-rt-6.4.0-150700.7.44.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-43284.html
  * https://www.suse.com/security/cve/CVE-2026-43500.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1264449
  * https://bugzilla.suse.com/show_bug.cgi?id=1264450

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