# Security update for the Linux Kernel (Live Patch 23 for SLE 15 SP4)

Announcement ID: SUSE-SU-2024:1280-1  
Rating: important  
References:

  * bsc#1219296

  
Cross-References:

  * CVE-2023-52340

  
CVSS scores:

  * CVE-2023-52340 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * openSUSE Leap 15.4
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise Live Patching 15-SP4
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Real Time 15 SP4
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for the Linux Kernel 5.14.21-150400_24_108 fixes one issue.

The following security issue was fixed:

  * CVE-2023-52340: Fixed ICMPv6 “Packet Too Big” packets force a DoS of the
    Linux kernel by forcing 100% CPU (bsc#1219296).

## 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 15.4  
    zypper in -t patch SUSE-2024-1280=1

  * SUSE Linux Enterprise Live Patching 15-SP4  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2024-1280=1

## Package List:

  * openSUSE Leap 15.4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_108-default-2-150400.9.8.1
    * kernel-livepatch-5_14_21-150400_24_108-default-debuginfo-2-150400.9.8.1
    * kernel-livepatch-SLE15-SP4_Update_23-debugsource-2-150400.9.8.1
  * SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_108-default-2-150400.9.8.1
    * kernel-livepatch-5_14_21-150400_24_108-default-debuginfo-2-150400.9.8.1
    * kernel-livepatch-SLE15-SP4_Update_23-debugsource-2-150400.9.8.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-52340.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1219296