SUSE-SU-2026:3248-1: important: Security update for the Linux Kernel RT (Live Patch 15 for SUSE Linux Enterprise 15 SP7)

[SLE-UPDATES]

# Security update for the Linux Kernel RT (Live Patch 15 for SUSE Linux
Enterprise 15 SP7)

Announcement ID: SUSE-SU-2026:3248-1  
Release Date: 2026-07-25T03:33:48Z  
Rating: important  
References:

  * bsc#1270060
  * bsc#1271370

  
Cross-References:

  * CVE-2026-53359
  * CVE-2026-53366

  
CVSS scores:

  * 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-2026-53366 ( 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 Enterprise Live Patching 15-SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.54 fixes various
security issues:

The following security issues were fixed:

  * CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected
    role (bsc#1270060).
  * 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 Enterprise Live Patching 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-3248=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
    * kernel-livepatch-SLE15-SP7-RT_Update_15-debugsource-3-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_54-rt-3-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_54-rt-debuginfo-3-150700.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-53359.html
  * https://www.suse.com/security/cve/CVE-2026-53366.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1270060
  * https://bugzilla.suse.com/show_bug.cgi?id=1271370

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