SUSE-SU-2026:0188-1: important: Security update for the Linux Kernel (Live Patch 31 for SUSE Linux Enterprise 15 SP5)

Tue Jan 20 20:30:10 UTC 2026

# Security update for the Linux Kernel (Live Patch 31 for SUSE Linux Enterprise
15 SP5)

Announcement ID: SUSE-SU-2026:0188-1  
Release Date: 2026-01-20T14:06:23Z  
Rating: important  
References:

  * bsc#1251165
  * bsc#1251203
  * bsc#1251787
  * bsc#1253437
  * bsc#1254451

Cross-References:

  * CVE-2022-50327
  * CVE-2022-50490
  * CVE-2023-53676
  * CVE-2025-38476
  * CVE-2025-40204

CVSS scores:

  * CVE-2022-50327 ( 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-2022-50327 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2022-50327 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2022-50490 ( 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-2022-50490 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-53676 ( 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-2023-53676 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38476 ( 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-2025-38476 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38476 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-40204 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-40204 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 five vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise kernel 5.14.21-150500.55.124 fixes
various security issues

The following security issues were fixed:

  * CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return
    value (bsc#1254451).
  * CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace
    (bsc#1251165).
  * CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in
    lio_target_nacl_info_show() (bsc#1251787).
  * CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline()
    (bsc#1251203).
  * CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437).

## 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-2026-188=1

  * SUSE Linux Enterprise Live Patching 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-188=1

## Package List:

  * openSUSE Leap 15.5 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP5_Update_31-debugsource-3-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_124-default-debuginfo-3-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_124-default-3-150500.2.1
  * SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP5_Update_31-debugsource-3-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_124-default-debuginfo-3-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_124-default-3-150500.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2022-50327.html
  * https://www.suse.com/security/cve/CVE-2022-50490.html
  * https://www.suse.com/security/cve/CVE-2023-53676.html
  * https://www.suse.com/security/cve/CVE-2025-38476.html
  * https://www.suse.com/security/cve/CVE-2025-40204.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1251165
  * https://bugzilla.suse.com/show_bug.cgi?id=1251203
  * https://bugzilla.suse.com/show_bug.cgi?id=1251787
  * https://bugzilla.suse.com/show_bug.cgi?id=1253437
  * https://bugzilla.suse.com/show_bug.cgi?id=1254451

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