SUSE-SU-2025:4237-1: important: Security update for the Linux Kernel (Live Patch 44 for SUSE Linux Enterprise 15 SP4)

[SLE-SECURITY-UPDATES]

# Security update for the Linux Kernel (Live Patch 44 for SUSE Linux Enterprise
15 SP4)

Announcement ID: SUSE-SU-2025:4237-1  
Release Date: 2025-11-25T19:39:10Z  
Rating: important  
References:

  * bsc#1251983

  
Cross-References:

  * CVE-2023-53673

  
CVSS scores:

  * CVE-2023-53673 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2023-53673 ( SUSE ):  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 one vulnerability can now be installed.

## Description:

This update for the SUSE Linux Enterprise kernel 5.14.21-150400.24.176 fixes one
security issue

The following security issue was fixed:

  * CVE-2023-53673: Bluetooth: hci_event: call disconnect callback before
    deleting conn (bsc#1251983).

## 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-2025-4237=1 SUSE-2025-4241=1

  * SUSE Linux Enterprise Live Patching 15-SP4  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2025-4237=1 SUSE-SLE-
Module-Live-Patching-15-SP4-2025-4241=1

## Package List:

  * openSUSE Leap 15.4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_176-default-4-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_170-default-debuginfo-8-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_170-default-8-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_44-debugsource-4-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_42-debugsource-8-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_176-default-debuginfo-4-150400.2.1
  * SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_176-default-4-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_170-default-debuginfo-8-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_170-default-8-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_44-debugsource-4-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_42-debugsource-8-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_176-default-debuginfo-4-150400.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-53673.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1251983

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