SUSE-SU-2026:3392-1: important: Security update for the Linux Kernel (Live Patch 18 for SUSE Linux Enterprise 15 SP7)

[SLE-SECURITY-UPDATES]

# Security update for the Linux Kernel (Live Patch 18 for SUSE Linux Enterprise
15 SP7)

Announcement ID: SUSE-SU-2026:3392-1  
Release Date: 2026-07-28T17:03:59Z  
Rating: important  
References:

  * bsc#1271370

  
Cross-References:

  * CVE-2026-53366

  
CVSS scores:

  * 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 one vulnerability can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.66 fixes
various security issues:

The following security issues were fixed:

  * 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-SP7-2026-3392=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP7 (ppc64le s390x x86_64)
    * kernel-livepatch-6_4_0-150700_53_66-default-debuginfo-2-150700.2.1
    * kernel-livepatch-6_4_0-150700_53_66-default-2-150700.2.1
    * kernel-livepatch-SLE15-SP7_Update_18-debugsource-2-150700.2.1

## References:

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

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