<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-2026:0306-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-01-27T16:15:20Z</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=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-2025-58150.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-2025-58150</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 15.6</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves two vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for xen fixes the following issues:</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>
</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-2026-306=1 openSUSE-SLE-15.6-2026-306=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.6 (aarch64 x86_64 i586)
<ul>
<li>xen-tools-domU-debuginfo-4.18.5_10-150600.3.37.1</li>
<li>xen-tools-domU-4.18.5_10-150600.3.37.1</li>
<li>xen-debugsource-4.18.5_10-150600.3.37.1</li>
<li>xen-libs-debuginfo-4.18.5_10-150600.3.37.1</li>
<li>xen-libs-4.18.5_10-150600.3.37.1</li>
<li>xen-devel-4.18.5_10-150600.3.37.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (x86_64)
<ul>
<li>xen-libs-32bit-4.18.5_10-150600.3.37.1</li>
<li>xen-libs-32bit-debuginfo-4.18.5_10-150600.3.37.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (aarch64 x86_64)
<ul>
<li>xen-tools-debuginfo-4.18.5_10-150600.3.37.1</li>
<li>xen-tools-4.18.5_10-150600.3.37.1</li>
<li>xen-4.18.5_10-150600.3.37.1</li>
<li>xen-doc-html-4.18.5_10-150600.3.37.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (noarch)
<ul>
<li>xen-tools-xendomains-wait-disk-4.18.5_10-150600.3.37.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (aarch64_ilp32)
<ul>
<li>xen-libs-64bit-debuginfo-4.18.5_10-150600.3.37.1</li>
<li>xen-libs-64bit-4.18.5_10-150600.3.37.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<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=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>