SUSE-SU-2026:21953-1: important: Security update for the Linux Kernel RT (Live Patch 8 for SUSE Linux Enterprise 16)

Wed Jun 3 16:34:56 UTC 2026

# Security update for the Linux Kernel RT (Live Patch 8 for SUSE Linux
Enterprise 16)

Announcement ID: SUSE-SU-2026:21953-1  
Release Date: 2026-06-01T07:59:43Z  
Rating: important  
References:

  * bsc#1261630
  * bsc#1261845
  * bsc#1264096
  * bsc#1265224
  * bsc#1265384

Cross-References:

  * CVE-2025-54518
  * CVE-2026-23437
  * CVE-2026-31406
  * CVE-2026-46300
  * CVE-2026-46333

CVSS scores:

  * CVE-2025-54518 ( 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-2025-54518 ( SUSE ):  7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-54518 ( NVD ):  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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-23437 ( 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-2026-23437 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23437 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-23437 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31406 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-31406 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31406 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46300 ( SUSE ):  8.6
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-46300 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-46300 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46300 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46333 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46333 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-46333 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected Products:

  * SUSE Linux Micro 6.2

An update that solves five vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.29.1 fixes
various security issues

The following security issues were fixed:

  * CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption (bsc#1264096).
  * CVE-2026-23437: net: shaper: protect late read accesses to the hierarchy
    (bsc#1261845).
  * CVE-2026-31406: xfrm: Fix work re-schedule after cancel in
    xfrm_nat_keepalive_net_fini() (bsc#1261630).
  * CVE-2026-46300: FragNesia attack: another xfrm/esp based local root exploit
    (bsc#1265224).
  * CVE-2026-46333: ptrace: slightly saner 'get_dumpable()' logic (bsc#1265384).

## 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 Micro 6.2  
    zypper in -t patch SUSE-SL-Micro-6.2-830=1

## Package List:

  * SUSE Linux Micro 6.2 (x86_64)
    * kernel-livepatch-6_12_0-160000_29-rt-debuginfo-3-160000.1.1
    * kernel-livepatch-SLE16-RT_Update_8-debugsource-3-160000.1.1
    * kernel-livepatch-6_12_0-160000_29-rt-3-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-54518.html
  * https://www.suse.com/security/cve/CVE-2026-23437.html
  * https://www.suse.com/security/cve/CVE-2026-31406.html
  * https://www.suse.com/security/cve/CVE-2026-46300.html
  * https://www.suse.com/security/cve/CVE-2026-46333.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261630
  * https://bugzilla.suse.com/show_bug.cgi?id=1261845
  * https://bugzilla.suse.com/show_bug.cgi?id=1264096
  * https://bugzilla.suse.com/show_bug.cgi?id=1265224
  * https://bugzilla.suse.com/show_bug.cgi?id=1265384

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