SUSE-SU-2026:2364-1: important: Security update for xen

[SLE-UPDATES]

# Security update for xen

Announcement ID: SUSE-SU-2026:2364-1  
Release Date: 2026-06-11T06:54:28Z  
Rating: important  
References:

  * bsc#1266952
  * bsc#1266953
  * bsc#1266955

  
Cross-References:

  * CVE-2026-42487
  * CVE-2026-42488
  * CVE-2026-42489
  * CVE-2026-42490

  
CVSS scores:

  * CVE-2026-42487 ( SUSE ):  8.8
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-42487 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-42488 ( SUSE ):  8.7
    CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-42488 ( SUSE ):  7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-42489 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
  * CVE-2026-42489 ( SUSE ):  5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
  * CVE-2026-42490 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
  * CVE-2026-42490 ( SUSE ):  4.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * Basesystem Module 15-SP7
  * Server Applications Module 15-SP7
  * SUSE Linux Enterprise Desktop 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 four vulnerabilities can now be installed.

## Description:

This update for xen fixes the following issues:

  * CVE-2026-42487: x86 HVM I/O port list traversal (bsc#1266952).
  * CVE-2026-42488: x86: mismatched mapcache metadata (bsc#1266955).
  * CVE-2026-42489,CVE-2026-42490: domctl lock open to abuse (bsc#1266953).

## 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:

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2364=1

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-2364=1

## Package List:

  * Basesystem Module 15-SP7 (x86_64)
    * xen-libs-debuginfo-4.20.3_06-150700.3.41.1
    * xen-tools-domU-debuginfo-4.20.3_06-150700.3.41.1
    * xen-libs-4.20.3_06-150700.3.41.1
    * xen-tools-domU-4.20.3_06-150700.3.41.1
    * xen-debugsource-4.20.3_06-150700.3.41.1
  * Server Applications Module 15-SP7 (x86_64)
    * xen-tools-4.20.3_06-150700.3.41.1
    * xen-devel-4.20.3_06-150700.3.41.1
    * xen-tools-debuginfo-4.20.3_06-150700.3.41.1
    * xen-debugsource-4.20.3_06-150700.3.41.1
    * xen-4.20.3_06-150700.3.41.1
  * Server Applications Module 15-SP7 (noarch)
    * xen-tools-xendomains-wait-disk-4.20.3_06-150700.3.41.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-42487.html
  * https://www.suse.com/security/cve/CVE-2026-42488.html
  * https://www.suse.com/security/cve/CVE-2026-42489.html
  * https://www.suse.com/security/cve/CVE-2026-42490.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1266952
  * https://bugzilla.suse.com/show_bug.cgi?id=1266953
  * https://bugzilla.suse.com/show_bug.cgi?id=1266955

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