SUSE-SU-2025:20808-1: important: Security update for kernel-livepatch-MICRO-6-0_Update_5

[SLE-SECURITY-UPDATES]

# Security update for kernel-livepatch-MICRO-6-0_Update_5

Announcement ID: SUSE-SU-2025:20808-1  
Release Date: 2025-10-07T15:38:23Z  
Rating: important  
References:

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

  
Cross-References:

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

  
CVSS scores:

  * 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 Micro 6.1

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for kernel-livepatch-MICRO-6-0_Update_5 fixes the following issues:

  * CVE-2025-21692: net: sched: fix ets qdisc OOB Indexing (bsc#1237048)
  * 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-2025-38477: net/sched: sch_qfq: Fix race condition on qfq_aggregate
    (bsc#1247315)

## 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 Micro 6.1  
    zypper in -t patch SUSE-SLE-Micro-6.1-kernel-153=1

## Package List:

  * SUSE Linux Micro 6.1 (s390x x86_64)
    * kernel-livepatch-6_4_0-25-default-debuginfo-9-1.2
    * kernel-livepatch-MICRO-6-0_Update_5-debugsource-9-1.2
    * kernel-livepatch-6_4_0-25-default-9-1.2

## References:

  * 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=1245509
  * https://bugzilla.suse.com/show_bug.cgi?id=1247315

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