Security update for xen

Announcement ID: SUSE-SU-2026:1093-1
Release Date: 2026-03-26T17:52:22Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-23554 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-23554 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-23554 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-23555 ( SUSE ): 8.2 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
  • CVE-2026-23555 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  • CVE-2026-23555 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/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 two vulnerabilities can now be installed.

Description:

This update for xen fixes the following issues:

  • CVE-2026-23554: xen: Use after free of paging structures in EPT (bsc#1259247, XSA-480)
  • CVE-2026-23555: xen: Xenstored DoS by unprivileged domain (bsc#1259248, XSA-481)

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:

  • Server Applications Module 15-SP7
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-1093=1
  • Basesystem Module 15-SP7
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-1093=1

Package List:

  • Server Applications Module 15-SP7 (x86_64)
    • xen-debugsource-4.20.2_08-150700.3.28.1
    • xen-tools-4.20.2_08-150700.3.28.1
    • xen-tools-debuginfo-4.20.2_08-150700.3.28.1
    • xen-devel-4.20.2_08-150700.3.28.1
    • xen-4.20.2_08-150700.3.28.1
  • Server Applications Module 15-SP7 (noarch)
    • xen-tools-xendomains-wait-disk-4.20.2_08-150700.3.28.1
  • Basesystem Module 15-SP7 (x86_64)
    • xen-tools-domU-4.20.2_08-150700.3.28.1
    • xen-debugsource-4.20.2_08-150700.3.28.1
    • xen-libs-debuginfo-4.20.2_08-150700.3.28.1
    • xen-libs-4.20.2_08-150700.3.28.1
    • xen-tools-domU-debuginfo-4.20.2_08-150700.3.28.1

References: