SUSE-SU-2025:03172-1: important: Security update for xen

[SLE-UPDATES]

# Security update for xen

Announcement ID: SUSE-SU-2025:03172-1  
Release Date: 2025-09-11T12:54:02Z  
Rating: important  
References:

  * bsc#1027519
  * bsc#1248807

  
Cross-References:

  * CVE-2025-27466
  * CVE-2025-58142
  * CVE-2025-58143

  
CVSS scores:

  * CVE-2025-27466 ( SUSE ):  6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
  * CVE-2025-27466 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-58142 ( SUSE ):  6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
  * CVE-2025-58142 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-58143 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-58143 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 three vulnerabilities can now be installed.

## Description:

This update for xen fixes the following issues:

Security issues fixed:

  * CVE-2025-27466: NULL pointer dereference in the Viridian interface when
    updating the reference TSC area (bsc#1248807).
  * CVE-2025-58142: NULL pointer dereference in the Viridian interface due to
    assumption that the SIM page is mapped when a synthetic timer message has to
    be delivered (bsc#1248807).
  * CVE-2025-58143: information leak and reference counter underflow in the
    Viridian interface due to race in the mapping of the reference TSC page
    (bsc#1248807).

Other issues fixed:

  * efi: Call FreePages() only if needed (bsc#1027519).
  * x86/hpet: do local APIC EOI after interrupt processing (bsc#1027519).
  * x86/hvm/ioreq: Fix condition in hvm_alloc_legacy_ioreq_gfn() (bsc#1027519).
  * x86/idle: Fix the C6 eoi_errata[] list to include NEHALEM_EX (bsc#1027519).
  * x86/iommu: setup MMCFG ahead of IOMMU (bsc#1027519).
  * x86/mce: Adjustments to intel_init_ppin() (bsc#1027519).
  * x86/mkelf32: pad load segment to 2Mb boundary (bsc#1027519).

## 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-SP7-2025-3172=1

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2025-3172=1

## Package List:

  * Basesystem Module 15-SP7 (x86_64)
    * xen-tools-domU-debuginfo-4.20.1_04-150700.3.11.1
    * xen-libs-4.20.1_04-150700.3.11.1
    * xen-tools-domU-4.20.1_04-150700.3.11.1
    * xen-debugsource-4.20.1_04-150700.3.11.1
    * xen-libs-debuginfo-4.20.1_04-150700.3.11.1
  * Server Applications Module 15-SP7 (x86_64)
    * xen-tools-debuginfo-4.20.1_04-150700.3.11.1
    * xen-4.20.1_04-150700.3.11.1
    * xen-tools-4.20.1_04-150700.3.11.1
    * xen-debugsource-4.20.1_04-150700.3.11.1
    * xen-devel-4.20.1_04-150700.3.11.1
  * Server Applications Module 15-SP7 (noarch)
    * xen-tools-xendomains-wait-disk-4.20.1_04-150700.3.11.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-27466.html
  * https://www.suse.com/security/cve/CVE-2025-58142.html
  * https://www.suse.com/security/cve/CVE-2025-58143.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1027519
  * https://bugzilla.suse.com/show_bug.cgi?id=1248807

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