SUSE-SU-2026:3345-1: important: Security update for the Linux Kernel (Live Patch 46 for SUSE Linux Enterprise 15 SP4)

SLE-UPDATES null at suse.de
Tue Jul 28 16:30:28 UTC 2026 

# Security update for the Linux Kernel (Live Patch 46 for SUSE Linux Enterprise
15 SP4)

Announcement ID: SUSE-SU-2026:3345-1  
Release Date: 2026-07-28T12:12:16Z  
Rating: important  
References:

  * bsc#1262404
  * bsc#1264060
  * bsc#1266970
  * bsc#1270060
  * bsc#1271648

  
Cross-References:

  * CVE-2026-23240
  * CVE-2026-31738
  * CVE-2026-43038
  * CVE-2026-46113
  * CVE-2026-53359

  
CVSS scores:

  * CVE-2026-23240 ( 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-2026-23240 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23240 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31738 ( 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-2026-31738 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31738 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-43038 ( SUSE ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-43038 ( NVD ):  7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
  * CVE-2026-43038 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46113 ( SUSE ):  9.3
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-46113 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-46113 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-53359 ( SUSE ):  9.3
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-53359 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-53359 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 five vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.184 fixes
various security issues:

The following security issues were fixed:

  * CVE-2026-23240: tls: Fix race condition in tls_sw_cancel_work_tx()
    (bsc#1262404).
  * CVE-2026-31738: vxlan: validate ND option lengths in vxlan_na_create
    (bsc#1264060).
  * CVE-2026-43038: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()
    (bsc#1271648).
  * CVE-2026-46113: KVM: x86: Fix shadow paging use-after-free due to unexpected
    GFN (bsc#1266970).
  * CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected
    role (bsc#1270060).

## 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-SP4  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-3347=1 SUSE-SLE-
Module-Live-Patching-15-SP4-2026-3348=1 SUSE-SLE-Module-Live-
Patching-15-SP4-2026-3353=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-3345=1
SUSE-SLE-Module-Live-Patching-15-SP4-2026-3352=1

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2026-3347=1 SUSE-2026-3348=1 SUSE-2026-3353=1
SUSE-2026-3345=1 SUSE-2026-3352=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP4_Update_53-debugsource-4-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_50-debugsource-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_200-default-debuginfo-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_214-default-4-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_200-default-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_209-default-debuginfo-5-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_214-default-debuginfo-4-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_49-debugsource-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-7-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_46-debugsource-11-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_197-default-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-11-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_209-default-5-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_52-debugsource-5-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_184-default-11-150400.2.1
  * openSUSE Leap 15.4 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP4_Update_53-debugsource-4-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_50-debugsource-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_200-default-debuginfo-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_214-default-4-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_200-default-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_209-default-debuginfo-5-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_214-default-debuginfo-4-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_49-debugsource-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-7-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_46-debugsource-11-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_184-default-debuginfo-11-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_197-default-7-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_209-default-5-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_52-debugsource-5-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_184-default-11-150400.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-23240.html
  * https://www.suse.com/security/cve/CVE-2026-31738.html
  * https://www.suse.com/security/cve/CVE-2026-43038.html
  * https://www.suse.com/security/cve/CVE-2026-46113.html
  * https://www.suse.com/security/cve/CVE-2026-53359.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1262404
  * https://bugzilla.suse.com/show_bug.cgi?id=1264060
  * https://bugzilla.suse.com/show_bug.cgi?id=1266970
  * https://bugzilla.suse.com/show_bug.cgi?id=1270060
  * https://bugzilla.suse.com/show_bug.cgi?id=1271648

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