SUSE-SU-2025:03469-1: important: Security update for the Linux Kernel RT (Live Patch 6 for SLE 15 SP6)

[SLE-UPDATES]

# Security update for the Linux Kernel RT (Live Patch 6 for SLE 15 SP6)

Announcement ID: SUSE-SU-2025:03469-1  
Release Date: 2025-10-07T12:40:52Z  
Rating: important  
References:

  * bsc#1237048
  * bsc#1240744
  * bsc#1243650
  * bsc#1245509
  * bsc#1247315

  
Cross-References:

  * CVE-2024-53168
  * CVE-2025-21692
  * CVE-2025-21791
  * CVE-2025-38089
  * CVE-2025-38477

  
CVSS scores:

  * CVE-2024-53168 ( SUSE ):  7.1
    CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2024-53168 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2024-53168 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2024-53168 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-21692 ( SUSE ):  6.9
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-21692 ( SUSE ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2025-21692 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-21692 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-21791 ( SUSE ):  8.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-21791 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-21791 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-21791 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38089 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-38089 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-38477 ( 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-2025-38477 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise Live Patching 15-SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves five vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 6.4.0-150600_10_20 fixes several issues.

The following security issues were fixed:

  * CVE-2025-38477: net/sched: sch_qfq: Fix race condition on qfq_aggregate
    (bsc#1247315).
  * CVE-2024-53168: sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
    (bsc#1243650).
  * CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1240744).
  * CVE-2025-38089: sunrpc: handle SVC_GARBAGE during svc auth processing as
    auth error (bsc#1245509).
  * CVE-2025-21692: net: sched: fix ets qdisc OOB Indexing (bsc#1237048).

## 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-SP6  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2025-3469=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP6 (x86_64)
    * kernel-livepatch-6_4_0-150600_10_20-rt-debuginfo-13-150600.2.1
    * kernel-livepatch-6_4_0-150600_10_20-rt-13-150600.2.1
    * kernel-livepatch-SLE15-SP6-RT_Update_6-debugsource-13-150600.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2024-53168.html
  * https://www.suse.com/security/cve/CVE-2025-21692.html
  * https://www.suse.com/security/cve/CVE-2025-21791.html
  * https://www.suse.com/security/cve/CVE-2025-38089.html
  * https://www.suse.com/security/cve/CVE-2025-38477.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1237048
  * https://bugzilla.suse.com/show_bug.cgi?id=1240744
  * https://bugzilla.suse.com/show_bug.cgi?id=1243650
  * https://bugzilla.suse.com/show_bug.cgi?id=1245509
  * https://bugzilla.suse.com/show_bug.cgi?id=1247315

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