SUSE-SU-2026:0012-1: important: Security update for xen

SLE-SECURITY-UPDATES null at suse.de
Mon Jan 5 16:31:05 UTC 2026 


# Security update for xen

Announcement ID: SUSE-SU-2026:0012-1  
Release Date: 2026-01-05T10:31:33Z  
Rating: important  
References:

  * bsc#1027519
  * bsc#1248807
  * bsc#1251271
  * bsc#1252692
  * bsc#1254180

  
Cross-References:

  * CVE-2025-27466
  * CVE-2025-58142
  * CVE-2025-58143
  * CVE-2025-58147
  * CVE-2025-58148
  * CVE-2025-58149

  
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
  * CVE-2025-58147 ( SUSE ):  6.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H
  * CVE-2025-58147 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2025-58148 ( SUSE ):  6.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H
  * CVE-2025-58148 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2025-58149 ( SUSE ):  4.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
  * CVE-2025-58149 ( SUSE ):  6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
  * CVE-2025-58149 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

  
Affected Products:

  * Basesystem Module 15-SP6
  * openSUSE Leap 15.6
  * Server Applications Module 15-SP6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves six 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).
  * CVE-2025-58147: incorrect input sanitisation in Viridian hypercalls using
    the HV_VP_SET Sparse format can lead to out-of-bounds write through
    `vpmask_set()` (bsc#1251271).
  * CVE-2025-58148: incorrect input sanitisation in Viridian hypercalls using
    any input format can lead to out-of-bounds read through `send_ipi()`
    (bsc#1251271).
  * CVE-2025-58149: incorrect removal of permissions on PCI device unplug allows
    PV guests to access memory of devices no longer assigned to them
    (bsc#1252692).

Other issues fixed:

  * Several upstream bug fixes (bsc#1027519).
  * Failure to restart xenstored (bsc#1254180).

## 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:

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-12=1 openSUSE-SLE-15.6-2026-12=1

  * Basesystem Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2026-12=1

  * Server Applications Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP6-2026-12=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-12=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-12=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 x86_64 i586)
    * xen-devel-4.18.5_08-150600.3.34.2
    * xen-libs-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-4.18.5_08-150600.3.34.2
    * xen-debugsource-4.18.5_08-150600.3.34.2
    * xen-libs-4.18.5_08-150600.3.34.2
  * openSUSE Leap 15.6 (x86_64)
    * xen-libs-32bit-debuginfo-4.18.5_08-150600.3.34.2
    * xen-libs-32bit-4.18.5_08-150600.3.34.2
  * openSUSE Leap 15.6 (aarch64 x86_64)
    * xen-4.18.5_08-150600.3.34.2
    * xen-doc-html-4.18.5_08-150600.3.34.2
    * xen-tools-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-4.18.5_08-150600.3.34.2
  * openSUSE Leap 15.6 (noarch)
    * xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2
  * openSUSE Leap 15.6 (aarch64_ilp32)
    * xen-libs-64bit-4.18.5_08-150600.3.34.2
    * xen-libs-64bit-debuginfo-4.18.5_08-150600.3.34.2
  * Basesystem Module 15-SP6 (x86_64)
    * xen-libs-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-4.18.5_08-150600.3.34.2
    * xen-debugsource-4.18.5_08-150600.3.34.2
    * xen-libs-4.18.5_08-150600.3.34.2
  * Server Applications Module 15-SP6 (x86_64)
    * xen-4.18.5_08-150600.3.34.2
    * xen-devel-4.18.5_08-150600.3.34.2
    * xen-debugsource-4.18.5_08-150600.3.34.2
    * xen-tools-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-4.18.5_08-150600.3.34.2
  * Server Applications Module 15-SP6 (noarch)
    * xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2
  * SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)
    * xen-4.18.5_08-150600.3.34.2
    * xen-devel-4.18.5_08-150600.3.34.2
    * xen-libs-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-4.18.5_08-150600.3.34.2
    * xen-debugsource-4.18.5_08-150600.3.34.2
    * xen-libs-4.18.5_08-150600.3.34.2
    * xen-tools-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-4.18.5_08-150600.3.34.2
  * SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
    * xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
    * xen-4.18.5_08-150600.3.34.2
    * xen-devel-4.18.5_08-150600.3.34.2
    * xen-libs-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-domU-4.18.5_08-150600.3.34.2
    * xen-debugsource-4.18.5_08-150600.3.34.2
    * xen-libs-4.18.5_08-150600.3.34.2
    * xen-tools-debuginfo-4.18.5_08-150600.3.34.2
    * xen-tools-4.18.5_08-150600.3.34.2
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
    * xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2

## 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://www.suse.com/security/cve/CVE-2025-58147.html
  * https://www.suse.com/security/cve/CVE-2025-58148.html
  * https://www.suse.com/security/cve/CVE-2025-58149.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1027519
  * https://bugzilla.suse.com/show_bug.cgi?id=1248807
  * https://bugzilla.suse.com/show_bug.cgi?id=1251271
  * https://bugzilla.suse.com/show_bug.cgi?id=1252692
  * https://bugzilla.suse.com/show_bug.cgi?id=1254180

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