SUSE-SU-2026:3246-1: important: Security update for the Linux Kernel RT (Live Patch 8 for SUSE Linux Enterprise 15 SP7)

SLE-UPDATES null at suse.de
Mon Jul 27 12:34:56 UTC 2026 

# Security update for the Linux Kernel RT (Live Patch 8 for SUSE Linux
Enterprise 15 SP7)

Announcement ID: SUSE-SU-2026:3246-1  
Release Date: 2026-07-25T03:34:00Z  
Rating: important  
References:

  * bsc#1262404
  * bsc#1264060
  * bsc#1266970
  * bsc#1270060
  * bsc#1271370
  * bsc#1271648

  
Cross-References:

  * CVE-2026-23240
  * CVE-2026-31738
  * CVE-2026-43038
  * CVE-2026-46113
  * CVE-2026-53359
  * CVE-2026-53366

  
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 ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2026-46113 ( 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
  * CVE-2026-53366 ( SUSE ):  9.0
    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-53366 ( SUSE ):  8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-53366 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise Live Patching 15-SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves six vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.28 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).
  * CVE-2026-53366: ipv4: account for fraggap on the paged allocation path
    (bsc#1271370).

## 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-SP7  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-3246=1 SUSE-SLE-
Module-Live-Patching-15-SP7-2026-3249=1 SUSE-SLE-Module-Live-
Patching-15-SP7-2026-3247=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-3251=1
SUSE-SLE-Module-Live-Patching-15-SP7-2026-3252=1 SUSE-SLE-Module-Live-
Patching-15-SP7-2026-3250=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
    * kernel-livepatch-SLE15-SP7-RT_Update_9-debugsource-9-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_31-rt-9-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo-9-150700.2.1
    * kernel-livepatch-SLE15-SP7-RT_Update_11-debugsource-7-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_37-rt-7-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_34-rt-debuginfo-7-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_51-rt-4-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_28-rt-10-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_37-rt-debuginfo-7-150700.2.1
    * kernel-livepatch-SLE15-SP7-RT_Update_10-debugsource-7-150700.2.1
    * kernel-livepatch-SLE15-SP7-RT_Update_8-debugsource-10-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_44-rt-debuginfo-5-150700.2.1
    * kernel-livepatch-SLE15-SP7-RT_Update_14-debugsource-4-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_28-rt-debuginfo-10-150700.2.1
    * kernel-livepatch-SLE15-SP7-RT_Update_13-debugsource-5-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_51-rt-debuginfo-4-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_34-rt-7-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_44-rt-5-150700.2.1

## 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://www.suse.com/security/cve/CVE-2026-53366.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=1271370
  * https://bugzilla.suse.com/show_bug.cgi?id=1271648

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