<div class="container">
<h1>Security update for xen</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:0012-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-01-05T10:31:33Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>important</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1027519">bsc#1027519</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1248807">bsc#1248807</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1251271">bsc#1251271</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1252692">bsc#1252692</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1254180">bsc#1254180</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>
Cross-References:
</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-27466.html">CVE-2025-27466</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-58142.html">CVE-2025-58142</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-58143.html">CVE-2025-58143</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-58147.html">CVE-2025-58147</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-58148.html">CVE-2025-58148</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-58149.html">CVE-2025-58149</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>CVSS scores:</th>
<td>
<ul class="list-group">
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-27466</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.5</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-27466</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58142</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.5</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58142</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58143</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58143</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58147</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58147</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58148</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58148</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58149</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58149</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.5</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58149</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">Basesystem Module 15-SP6</li>
<li class="list-group-item">openSUSE Leap 15.6</li>
<li class="list-group-item">Server Applications Module 15-SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Real Time 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP6 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP6</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves six vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for xen fixes the following issues:</p>
<p>Security issues fixed: </p>
<ul>
<li>CVE-2025-27466: NULL pointer dereference in the Viridian interface when updating the reference TSC area (bsc#1248807).</li>
<li>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).</li>
<li>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).</li>
<li>CVE-2025-58147: incorrect input sanitisation in Viridian hypercalls using the HV_VP_SET Sparse format can lead to
out-of-bounds write through <code>vpmask_set()</code> (bsc#1251271).</li>
<li>CVE-2025-58148: incorrect input sanitisation in Viridian hypercalls using any input format can lead to out-of-bounds
read through <code>send_ipi()</code> (bsc#1251271).</li>
<li>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).</li>
</ul>
<p>Other issues fixed:</p>
<ul>
<li>Several upstream bug fixes (bsc#1027519).</li>
<li>Failure to restart xenstored (bsc#1254180).</li>
</ul>
<h2>Special Instructions and Notes:</h2>
<ul>
<li>Please reboot the system after installing this update.</li>
</ul>
<h2>Patch Instructions:</h2>
<p>
To install this SUSE update use the SUSE recommended
installation methods like YaST online_update or "zypper patch".<br/>
Alternatively you can run the command listed for your product:
</p>
<ul class="list-group">
<li class="list-group-item">
openSUSE Leap 15.6
<br/>
<code>zypper in -t patch SUSE-2026-12=1 openSUSE-SLE-15.6-2026-12=1</code>
</li>
<li class="list-group-item">
Basesystem Module 15-SP6
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2026-12=1</code>
</li>
<li class="list-group-item">
Server Applications Module 15-SP6
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP6-2026-12=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP6 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-12=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP6
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-12=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.6 (aarch64 x86_64 i586)
<ul>
<li>xen-devel-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-4.18.5_08-150600.3.34.2</li>
<li>xen-debugsource-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (x86_64)
<ul>
<li>xen-libs-32bit-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-32bit-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (aarch64 x86_64)
<ul>
<li>xen-4.18.5_08-150600.3.34.2</li>
<li>xen-doc-html-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (noarch)
<ul>
<li>xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (aarch64_ilp32)
<ul>
<li>xen-libs-64bit-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-64bit-debuginfo-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
Basesystem Module 15-SP6 (x86_64)
<ul>
<li>xen-libs-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-4.18.5_08-150600.3.34.2</li>
<li>xen-debugsource-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
Server Applications Module 15-SP6 (x86_64)
<ul>
<li>xen-4.18.5_08-150600.3.34.2</li>
<li>xen-devel-4.18.5_08-150600.3.34.2</li>
<li>xen-debugsource-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
Server Applications Module 15-SP6 (noarch)
<ul>
<li>xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)
<ul>
<li>xen-4.18.5_08-150600.3.34.2</li>
<li>xen-devel-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-4.18.5_08-150600.3.34.2</li>
<li>xen-debugsource-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
<ul>
<li>xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
<ul>
<li>xen-4.18.5_08-150600.3.34.2</li>
<li>xen-devel-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-domU-4.18.5_08-150600.3.34.2</li>
<li>xen-debugsource-4.18.5_08-150600.3.34.2</li>
<li>xen-libs-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-debuginfo-4.18.5_08-150600.3.34.2</li>
<li>xen-tools-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
<ul>
<li>xen-tools-xendomains-wait-disk-4.18.5_08-150600.3.34.2</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-27466.html">https://www.suse.com/security/cve/CVE-2025-27466.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-58142.html">https://www.suse.com/security/cve/CVE-2025-58142.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-58143.html">https://www.suse.com/security/cve/CVE-2025-58143.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-58147.html">https://www.suse.com/security/cve/CVE-2025-58147.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-58148.html">https://www.suse.com/security/cve/CVE-2025-58148.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-58149.html">https://www.suse.com/security/cve/CVE-2025-58149.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1027519">https://bugzilla.suse.com/show_bug.cgi?id=1027519</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1248807">https://bugzilla.suse.com/show_bug.cgi?id=1248807</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1251271">https://bugzilla.suse.com/show_bug.cgi?id=1251271</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1252692">https://bugzilla.suse.com/show_bug.cgi?id=1252692</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1254180">https://bugzilla.suse.com/show_bug.cgi?id=1254180</a>
</li>
</ul>
</div>