SUSE-SU-2026:23031-1: important: Security update for the Linux Kernel RT (Live Patch 25 for SUSE Linux Enterprise Micro 6.0)

Tue Aug 11 16:42:54 UTC 2026

# Security update for the Linux Kernel RT (Live Patch 25 for SUSE Linux
Enterprise Micro 6.0)

Announcement ID: SUSE-SU-2026:23031-1  
Release Date: 2026-07-28T16:11:16Z  
Rating: important  
References:

  * bsc#1267723
  * bsc#1268662
  * bsc#1269023
  * bsc#1269495
  * bsc#1270060
  * bsc#1271370

Cross-References:

  * CVE-2026-46173
  * CVE-2026-52909
  * CVE-2026-52943
  * CVE-2026-53359
  * CVE-2026-53362
  * CVE-2026-53366

CVSS scores:

  * CVE-2026-46173 ( 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-2026-46173 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46173 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-52909 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-52909 ( SUSE ):  7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-52909 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-52943 ( 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-2026-52943 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-52943 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-52943 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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-2026-53362 ( 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-2026-53362 ( SUSE ):  8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-53362 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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 Micro 6.0

An update that solves six vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-48.1 fixes various
security issues:

The following security issues were fixed:

  * CVE-2026-46173: exit: prevent preemption of oopsing TASK_DEAD task
    (bsc#1267723).
  * CVE-2026-52909: ip6_vti: set netns_immutable on the fallback device
    (bsc#1268662).
  * CVE-2026-52943: net: skbuff: fix missing zerocopy reference in pskb_carve
    helpers (bsc#1269023).
  * CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected
    role (bsc#1270060).
  * CVE-2026-53362: ipv6: account for fraggap on the paged allocation path
    (ipv6_frag_escape) (bsc#1269495).
  * 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 Micro 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-kernel-565=1

## Package List:

  * SUSE Linux Micro 6.0 (x86_64)
    * kernel-livepatch-6_4_0-48-rt-2-1.1
    * kernel-livepatch-6_4_0-48-rt-debuginfo-2-1.1
    * kernel-livepatch-MICRO-6-0-RT_Update_25-debugsource-2-1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-46173.html
  * https://www.suse.com/security/cve/CVE-2026-52909.html
  * https://www.suse.com/security/cve/CVE-2026-52943.html
  * https://www.suse.com/security/cve/CVE-2026-53359.html
  * https://www.suse.com/security/cve/CVE-2026-53362.html
  * https://www.suse.com/security/cve/CVE-2026-53366.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1267723
  * https://bugzilla.suse.com/show_bug.cgi?id=1268662
  * https://bugzilla.suse.com/show_bug.cgi?id=1269023
  * https://bugzilla.suse.com/show_bug.cgi?id=1269495
  * https://bugzilla.suse.com/show_bug.cgi?id=1270060
  * https://bugzilla.suse.com/show_bug.cgi?id=1271370

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