SUSE-SU-2026:0394-1: moderate: Security update for xen

Thu Feb 5 20:36:37 UTC 2026

# Security update for xen

Announcement ID: SUSE-SU-2026:0394-1  
Release Date: 2026-02-05T15:42:11Z  
Rating: moderate  
References:

  * bsc#1252692
  * bsc#1254180
  * bsc#1256745
  * bsc#1256747

Cross-References:

  * CVE-2025-58149
  * CVE-2025-58150
  * CVE-2026-23553

CVSS scores:

  * 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
  * CVE-2025-58150 ( SUSE ):  4.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-58150 ( SUSE ):  5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-58150 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-23553 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-23553 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-23553 ( NVD ):  2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Products:

  * openSUSE Leap 15.4
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro for Rancher 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.4

An update that solves three vulnerabilities and has one security fix can now be
installed.

## Description:

This update for xen fixes the following issues:

Security fixes:

  * CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing
    (XSA-477) (bsc#1256745)
  * CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation (XSA-479)
    (bsc#1256747)
  * CVE-2025-58149: Fixed incorrect removal od permissions on PCI device unplug
    allow PV guests to access memory of devices no longer assigned to it
    (XSA-476) (bsc#1252692)

Other fixes:

  * Fixed virtxend service restart. Caused by a failure to start 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 15.4  
    zypper in -t patch SUSE-2026-394=1

  * SUSE Linux Enterprise Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-394=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-394=1

  * SUSE Linux Enterprise Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-394=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-394=1

## Package List:

  * openSUSE Leap 15.4 (aarch64 x86_64 i586)
    * xen-debugsource-4.16.7_06-150400.4.78.1
    * xen-tools-domU-debuginfo-4.16.7_06-150400.4.78.1
    * xen-libs-4.16.7_06-150400.4.78.1
    * xen-tools-domU-4.16.7_06-150400.4.78.1
    * xen-devel-4.16.7_06-150400.4.78.1
    * xen-libs-debuginfo-4.16.7_06-150400.4.78.1
  * openSUSE Leap 15.4 (x86_64)
    * xen-libs-32bit-4.16.7_06-150400.4.78.1
    * xen-libs-32bit-debuginfo-4.16.7_06-150400.4.78.1
  * openSUSE Leap 15.4 (aarch64 x86_64)
    * xen-tools-4.16.7_06-150400.4.78.1
    * xen-tools-debuginfo-4.16.7_06-150400.4.78.1
    * xen-4.16.7_06-150400.4.78.1
    * xen-doc-html-4.16.7_06-150400.4.78.1
  * openSUSE Leap 15.4 (noarch)
    * xen-tools-xendomains-wait-disk-4.16.7_06-150400.4.78.1
  * openSUSE Leap 15.4 (aarch64_ilp32)
    * xen-libs-64bit-4.16.7_06-150400.4.78.1
    * xen-libs-64bit-debuginfo-4.16.7_06-150400.4.78.1
  * SUSE Linux Enterprise Micro for Rancher 5.3 (x86_64)
    * xen-libs-debuginfo-4.16.7_06-150400.4.78.1
    * xen-libs-4.16.7_06-150400.4.78.1
    * xen-debugsource-4.16.7_06-150400.4.78.1
  * SUSE Linux Enterprise Micro 5.3 (x86_64)
    * xen-libs-debuginfo-4.16.7_06-150400.4.78.1
    * xen-libs-4.16.7_06-150400.4.78.1
    * xen-debugsource-4.16.7_06-150400.4.78.1
  * SUSE Linux Enterprise Micro for Rancher 5.4 (x86_64)
    * xen-libs-debuginfo-4.16.7_06-150400.4.78.1
    * xen-libs-4.16.7_06-150400.4.78.1
    * xen-debugsource-4.16.7_06-150400.4.78.1
  * SUSE Linux Enterprise Micro 5.4 (x86_64)
    * xen-libs-debuginfo-4.16.7_06-150400.4.78.1
    * xen-libs-4.16.7_06-150400.4.78.1
    * xen-debugsource-4.16.7_06-150400.4.78.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-58149.html
  * https://www.suse.com/security/cve/CVE-2025-58150.html
  * https://www.suse.com/security/cve/CVE-2026-23553.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1252692
  * https://bugzilla.suse.com/show_bug.cgi?id=1254180
  * https://bugzilla.suse.com/show_bug.cgi?id=1256745
  * https://bugzilla.suse.com/show_bug.cgi?id=1256747

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