SUSE-SU-2026:23382-1: important: Security update for the Linux Kernel RT (Live Patch 27 for SUSE Linux Enterprise Micro 6.0)

[SLE-UPDATES]

# Security update for the Linux Kernel RT (Live Patch 27 for SUSE Linux
Enterprise Micro 6.0)

Announcement ID: SUSE-SU-2026:23382-1  
Release Date: 2026-08-31T15:30:50Z  
Rating: important  
References:

  * bsc#1270023
  * bsc#1270024
  * bsc#1271543
  * bsc#1271867

  
Cross-References:

  * CVE-2026-53224
  * CVE-2026-53246
  * CVE-2026-64530
  * CVE-2026-64600

  
CVSS scores:

  * CVE-2026-53224 ( 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-2026-53224 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53224 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-53246 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-53246 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-53246 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-64530 ( SUSE ):  8.8
    CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-64530 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-64530 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-64600 ( SUSE ):  8.8
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-64600 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-64600 ( 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 four vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-50.2 fixes various
security issues:

The following security issues were fixed:

  * CVE-2026-53224: sctp: validate embedded INIT chunk and address list lengths
    in cookie (bsc#1270023)
  * CVE-2026-53246: sctp: validate cached peer INIT chunk length in COOKIE_ECHO
    processing (bsc#1270024).
  * CVE-2026-64530: net/sched: cls_api: Handle TC_ACT_CONSUMED in
    tcf_qevent_hand (bsc#1271867).
  * CVE-2026-64600: xfs: resample the data fork mapping after cycling ILOCK
    (RefluXFS) (bsc#1271543).

## 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-590=1

## Package List:

  * SUSE Linux Micro 6.0 (x86_64)
    * kernel-livepatch-MICRO-6-0-RT_Update_27-debugsource-2-1.1
    * kernel-livepatch-6_4_0-50-rt-debuginfo-2-1.1
    * kernel-livepatch-6_4_0-50-rt-2-1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-53224.html
  * https://www.suse.com/security/cve/CVE-2026-53246.html
  * https://www.suse.com/security/cve/CVE-2026-64530.html
  * https://www.suse.com/security/cve/CVE-2026-64600.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1270023
  * https://bugzilla.suse.com/show_bug.cgi?id=1270024
  * https://bugzilla.suse.com/show_bug.cgi?id=1271543
  * https://bugzilla.suse.com/show_bug.cgi?id=1271867

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