SUSE-SU-2026:2518-1: important: Security update for the Linux Kernel (Live Patch 77 for SUSE Linux Enterprise 12 SP5)

[SLE-SECURITY-UPDATES]

# Security update for the Linux Kernel (Live Patch 77 for SUSE Linux Enterprise
12 SP5)

Announcement ID: SUSE-SU-2026:2518-1  
Release Date: 2026-06-23T07:33:50Z  
Rating: important  
References:

  * bsc#1261640
  * bsc#1263088
  * bsc#1266229
  * bsc#1268282

  
Cross-References:

  * CVE-2026-31402
  * CVE-2026-31504
  * CVE-2026-43503
  * CVE-2026-46323

  
CVSS scores:

  * CVE-2026-31402 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-31402 ( SUSE ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-31402 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31504 ( 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-2026-31504 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31504 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43503 ( 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-2026-43503 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43503 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-46323 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46323 ( 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 High Performance Computing 12 SP5
  * SUSE Linux Enterprise Live Patching 12-SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.293 fixes various
security issues

The following security issues were fixed:

  * CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
    (bsc#1261640).
  * CVE-2026-31504: net: fix fanout UAF in packet_release() via NETDEV_UP race
    (bsc#1263088).
  * CVE-2026-43503: final dirty.frag related fixes (bsc#1266229).
  * CVE-2026-46323: net: gro: don't merge zcopy skbs (bsc#1268282).

## 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 12-SP5  
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2026-2518=1 SUSE-SLE-Live-
Patching-12-SP5-2026-2519=1 SUSE-SLE-Live-Patching-12-SP5-2026-2516=1 SUSE-SLE-
Live-Patching-12-SP5-2026-2514=1 SUSE-SLE-Live-Patching-12-SP5-2026-2517=1

## Package List:

  * SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64)
    * kgraft-patch-4_12_14-122_266-default-17-2.1
    * kgraft-patch-4_12_14-122_258-default-18-2.1
    * kgraft-patch-4_12_14-122_280-default-9-2.1
    * kgraft-patch-4_12_14-122_275-default-11-2.1
    * kgraft-patch-4_12_14-122_293-default-8-2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-31402.html
  * https://www.suse.com/security/cve/CVE-2026-31504.html
  * https://www.suse.com/security/cve/CVE-2026-43503.html
  * https://www.suse.com/security/cve/CVE-2026-46323.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261640
  * https://bugzilla.suse.com/show_bug.cgi?id=1263088
  * https://bugzilla.suse.com/show_bug.cgi?id=1266229
  * https://bugzilla.suse.com/show_bug.cgi?id=1268282

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