# Security update for the Linux Kernel (Live Patch 40 for SLE 15 SP2)

Announcement ID: SUSE-SU-2024:1257-1  
Rating: important  
References:

  * bsc#1218613
  * bsc#1219078
  * bsc#1219296

  
Cross-References:

  * CVE-2023-42753
  * CVE-2023-52340
  * CVE-2024-0565

  
CVSS scores:

  * CVE-2023-42753 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-42753 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * 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
  * CVE-2024-0565 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2024-0565 ( NVD ):  7.4 CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 15 SP2
  * SUSE Linux Enterprise Live Patching 15-SP2
  * SUSE Linux Enterprise Server 15 SP2
  * SUSE Linux Enterprise Server for SAP Applications 15 SP2

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 5.3.18-150200_24_163 fixes several issues.

The following security issues were fixed:

  * CVE-2024-0565: Fixed an out-of-bounds memory read flaw in
    receive_encrypted_standard in fs/smb/client/smb2ops.c (bsc#1219078).
  * CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter
    subsystem. This issue may have allowed a local user to crash the system or
    potentially escalate their privileges (bsc#1218613).
  * 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:

  * SUSE Linux Enterprise Live Patching 15-SP2  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2024-1257=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP2 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP2_Update_40-debugsource-7-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_163-default-debuginfo-7-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_163-default-7-150200.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-42753.html
  * https://www.suse.com/security/cve/CVE-2023-52340.html
  * https://www.suse.com/security/cve/CVE-2024-0565.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1218613
  * https://bugzilla.suse.com/show_bug.cgi?id=1219078
  * https://bugzilla.suse.com/show_bug.cgi?id=1219296