SUSE-SU-2025:03403-1: important: Security update for the Linux Kernel (Live Patch 29 for SLE 15 SP5)

[SLE-UPDATES]

# Security update for the Linux Kernel (Live Patch 29 for SLE 15 SP5)

Announcement ID: SUSE-SU-2025:03403-1  
Release Date: 2025-09-27T22:04:03Z  
Rating: important  
References:

  * bsc#1245805
  * bsc#1247499
  * bsc#1248298

  
Cross-References:

  * CVE-2025-21701
  * CVE-2025-38498
  * CVE-2025-38555

  
CVSS scores:

  * CVE-2025-21701 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38498 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-38498 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38555 ( 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-2025-38555 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.5
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise Live Patching 15-SP5
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Real Time 15 SP5
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 5.14.21-150500_55_116 fixes several issues.

The following security issues were fixed:

  * CVE-2025-38498: do_change_type(): refuse to operate on unmounted/not ours
    mounts (bsc#1247499).
  * CVE-2025-38555: usb: gadget : fix use-after-free in composite_dev_cleanup()
    (bsc#1248298).
  * CVE-2025-21701: net: avoid race between device unregistration and ethnl ops
    (bsc#1245805).

## 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 15.5  
    zypper in -t patch SUSE-2025-3403=1

  * SUSE Linux Enterprise Live Patching 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2025-3403=1

## Package List:

  * openSUSE Leap 15.5 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150500_55_116-default-3-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_116-default-debuginfo-3-150500.2.1
    * kernel-livepatch-SLE15-SP5_Update_29-debugsource-3-150500.2.1
  * SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150500_55_116-default-3-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_116-default-debuginfo-3-150500.2.1
  * SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x)
    * kernel-livepatch-SLE15-SP5_Update_29-debugsource-3-150500.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-21701.html
  * https://www.suse.com/security/cve/CVE-2025-38498.html
  * https://www.suse.com/security/cve/CVE-2025-38555.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1245805
  * https://bugzilla.suse.com/show_bug.cgi?id=1247499
  * https://bugzilla.suse.com/show_bug.cgi?id=1248298

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