# Security update for the Linux Kernel (Live Patch 21 for SLE 15 SP4)

Announcement ID: SUSE-SU-2024:1072-1  
Rating: important  
References:

  * bsc#1218487
  * bsc#1218610

  
Cross-References:

  * CVE-2023-51779
  * CVE-2023-6531

  
CVSS scores:

  * CVE-2023-51779 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6531 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6531 ( NVD ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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 two vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 5.14.21-150400_24_100 fixes several issues.

The following security issues were fixed:

  * CVE-2023-6531: Fixed a use-after-free flaw due to a race problem in the unix
    garbage collector's deletion of SKB races with unix_stream_read_generic()on
    the socket that the SKB is queued on (bsc#1218487).
  * CVE-2023-51779: Fixed a use-after-free because of a bt_sock_ioctl race
    condition in bt_sock_recvmsg (bsc#1218610).

## 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-2024-1072=1 SUSE-2024-1073=1

  * SUSE Linux Enterprise Live Patching 15-SP4  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2024-1072=1 SUSE-SLE-
Module-Live-Patching-15-SP4-2024-1073=1

## Package List:

  * openSUSE Leap 15.4 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP4_Update_20-debugsource-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_97-default-4-150400.2.3
    * kernel-livepatch-SLE15-SP4_Update_21-debugsource-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_100-default-debuginfo-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_100-default-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_97-default-debuginfo-4-150400.2.3
  * SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP4_Update_20-debugsource-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_97-default-4-150400.2.3
    * kernel-livepatch-SLE15-SP4_Update_21-debugsource-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_100-default-debuginfo-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_100-default-4-150400.2.3
    * kernel-livepatch-5_14_21-150400_24_97-default-debuginfo-4-150400.2.3

## References:

  * https://www.suse.com/security/cve/CVE-2023-51779.html
  * https://www.suse.com/security/cve/CVE-2023-6531.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1218487
  * https://bugzilla.suse.com/show_bug.cgi?id=1218610