SUSE-SU-2026:1674-1: important: Security update for the Linux Kernel

[SLE-UPDATES]

# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:1674-1  
Release Date: 2026-05-02T07:19:12Z  
Rating: important  
References:

  * bsc#1262573

  
Cross-References:

  * CVE-2026-31431

  
CVSS scores:

  * CVE-2026-31431 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31431 ( 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 Micro 5.2
  * SUSE Linux Enterprise Micro for Rancher 5.2

  
  
An update that solves one vulnerability can now be installed.

## Description:

The SUSE Linux Enterprise 15 SP3 RT kernel was updated to fix various security
issues

The following security issues were fixed:

  * CVE-2026-31431: The copy.fail security issue is fixed by revert to operating
    out-of-place in algif_aead (bsc#1262573)

## Special Instructions and Notes:

  * Please reboot the system after installing this update.

## 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 Micro 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1674=1

  * SUSE Linux Enterprise Micro for Rancher 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1674=1

## Package List:

  * SUSE Linux Enterprise Micro 5.2 (nosrc x86_64)
    * kernel-rt-5.3.18-150300.244.1
  * SUSE Linux Enterprise Micro 5.2 (x86_64)
    * kernel-rt-debuginfo-5.3.18-150300.244.1
    * kernel-rt-debugsource-5.3.18-150300.244.1
  * SUSE Linux Enterprise Micro 5.2 (noarch)
    * kernel-source-rt-5.3.18-150300.244.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (nosrc x86_64)
    * kernel-rt-5.3.18-150300.244.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (x86_64)
    * kernel-rt-debuginfo-5.3.18-150300.244.1
    * kernel-rt-debugsource-5.3.18-150300.244.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (noarch)
    * kernel-source-rt-5.3.18-150300.244.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-31431.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1262573

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