<div class="container">
<h1>Security update for libyang</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:2381-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-06-12T06:50:59Z</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=1265330">bsc#1265330</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-2026-44673.html">CVE-2026-44673</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-2026-44673</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.8</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-44673</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.6</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-44673</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:N/I:N/A:H</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 High Performance Computing 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing LTSS 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP4 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP4</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves one vulnerability can now be installed.</p>
<h2>Description:</h2>
<p>This update for libyang fixes the following issue</p>
<ul>
<li>CVE-2026-44673: integer overflow in <code>lyb_read_string()</code> of <code>src/parser_lyb.c</code> leads to heap buffer overflow when
parsing a maliciously crafted LYB binary blob (bsc#1265330).</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-2026-2381=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-2381=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP4 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-2381=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-2381=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-2381=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64 i586)
<ul>
<li>libyang-devel-1.0.184-150300.3.9.1</li>
<li>yang-tools-debuginfo-1.0.184-150300.3.9.1</li>
<li>yang-tools-1.0.184-150300.3.9.1</li>
<li>libyang-cpp-devel-1.0.184-150300.3.9.1</li>
<li>libyang-extentions-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang1-debuginfo-1.0.184-150300.3.9.1</li>
<li>python3-yang-1.0.184-150300.3.9.1</li>
<li>python3-yang-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-extentions-1.0.184-150300.3.9.1</li>
<li>libyang-cpp1-1.0.184-150300.3.9.1</li>
<li>libyang-cpp1-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang1-1.0.184-150300.3.9.1</li>
<li>libyang-debugsource-1.0.184-150300.3.9.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.3 (noarch)
<ul>
<li>libyang-doc-1.0.184-150300.3.9.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
<ul>
<li>libyang-extentions-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang1-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-extentions-1.0.184-150300.3.9.1</li>
<li>libyang1-1.0.184-150300.3.9.1</li>
<li>libyang-debugsource-1.0.184-150300.3.9.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>libyang-extentions-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang1-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-extentions-1.0.184-150300.3.9.1</li>
<li>libyang1-1.0.184-150300.3.9.1</li>
<li>libyang-debugsource-1.0.184-150300.3.9.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
<ul>
<li>libyang-extentions-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang1-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-extentions-1.0.184-150300.3.9.1</li>
<li>libyang1-1.0.184-150300.3.9.1</li>
<li>libyang-debugsource-1.0.184-150300.3.9.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
<ul>
<li>libyang-extentions-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang1-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-debuginfo-1.0.184-150300.3.9.1</li>
<li>libyang-extentions-1.0.184-150300.3.9.1</li>
<li>libyang1-1.0.184-150300.3.9.1</li>
<li>libyang-debugsource-1.0.184-150300.3.9.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-44673.html">https://www.suse.com/security/cve/CVE-2026-44673.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1265330">https://bugzilla.suse.com/show_bug.cgi?id=1265330</a>
</li>
</ul>
</div>