<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-2026:0303-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-01-27T16:14:45Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>moderate</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<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=1252692">bsc#1252692</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1254180">bsc#1254180</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1256745">bsc#1256745</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1256747">bsc#1256747</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-2025-58149.html">CVE-2025-58149</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-58150.html">CVE-2025-58150</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-23553.html">CVE-2026-23553</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-2025-58149</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>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58150</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.8</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-58150</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-23553</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.8</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-23553</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.5</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/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">openSUSE Leap 15.3</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.2</li>
<li class="list-group-item">SUSE Linux Enterprise Micro for Rancher 5.2</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 fixes:</p>
<ul>
<li>CVE-2025-58150: Fixed buffer overrun with shadow paging and
tracing (XSA-477) (bsc#1256745)</li>
<li>CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation
(XSA-479) (bsc#1256747)</li>
<li>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)</li>
<li>CVE-2025-27466, CVE-2025-58142, CVE-2025-58143: Fixed multiple
vulnerabilities in the Viridian interface (XSA-472) (bsc#1248807)</li>
</ul>
<p>Other fixes:</p>
<ul>
<li>Fixed virtxend service restart. Caused by a failure to start
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 15.3
<br/>
<code>zypper in -t patch SUSE-2026-303=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.2
<br/>
<code>zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-303=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro for Rancher 5.2
<br/>
<code>zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-303=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.3 (aarch64 x86_64 i586)
<ul>
<li>xen-debugsource-4.14.6_28-150300.3.94.1</li>
<li>xen-devel-4.14.6_28-150300.3.94.1</li>
<li>xen-tools-domU-debuginfo-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-debuginfo-4.14.6_28-150300.3.94.1</li>
<li>xen-tools-domU-4.14.6_28-150300.3.94.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.3 (x86_64)
<ul>
<li>xen-libs-32bit-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-32bit-debuginfo-4.14.6_28-150300.3.94.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.3 (aarch64 x86_64)
<ul>
<li>xen-tools-debuginfo-4.14.6_28-150300.3.94.1</li>
<li>xen-doc-html-4.14.6_28-150300.3.94.1</li>
<li>xen-4.14.6_28-150300.3.94.1</li>
<li>xen-tools-4.14.6_28-150300.3.94.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.3 (noarch)
<ul>
<li>xen-tools-xendomains-wait-disk-4.14.6_28-150300.3.94.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.3 (aarch64_ilp32)
<ul>
<li>xen-libs-64bit-debuginfo-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-64bit-4.14.6_28-150300.3.94.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.2 (x86_64)
<ul>
<li>xen-debugsource-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-debuginfo-4.14.6_28-150300.3.94.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro for Rancher 5.2 (x86_64)
<ul>
<li>xen-debugsource-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-4.14.6_28-150300.3.94.1</li>
<li>xen-libs-debuginfo-4.14.6_28-150300.3.94.1</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-2025-58149.html">https://www.suse.com/security/cve/CVE-2025-58149.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-58150.html">https://www.suse.com/security/cve/CVE-2025-58150.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-23553.html">https://www.suse.com/security/cve/CVE-2026-23553.html</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=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>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1256745">https://bugzilla.suse.com/show_bug.cgi?id=1256745</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1256747">https://bugzilla.suse.com/show_bug.cgi?id=1256747</a>
</li>
</ul>
</div>