<div class="container">
<h1>Security update for libpng16</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:1368-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-04-15T14:35:40Z</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=1260754">bsc#1260754</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260755">bsc#1260755</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-2026-33416.html">CVE-2026-33416</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-33636.html">CVE-2026-33636</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-2026-33416</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">9.2</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33416</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.1</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33416</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33636</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.3</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:H/AT:P/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-2026-33636</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-2026-33636</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.6</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">Basesystem Module 15-SP7</li>
<li class="list-group-item">openSUSE Leap 15.6</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Real Time 15 SP7</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 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP7</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 libpng16 fixes the following issues:</p>
<ul>
<li>CVE-2026-33416: use-after-free via pointer aliasing in <code>png_set_tRNS</code> and <code>png_set_PLTE</code> can lead to arbitrary code
execution (bsc#1260754).</li>
<li>CVE-2026-33636: out-of-bounds read/write in the palette expansion on ARM Neon can lead to information leak and
crashes (bsc#1260755).</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-2026-1368=1 openSUSE-SLE-15.6-2026-1368=1</code>
</li>
<li class="list-group-item">
Basesystem Module 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-1368=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-2026-1368=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-SP6-2026-1368=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
<ul>
<li>libpng16-compat-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-debugsource-1.6.40-150600.3.17.1</li>
<li>libpng16-16-debuginfo-1.6.40-150600.3.17.1</li>
<li>libpng16-tools-1.6.40-150600.3.17.1</li>
<li>libpng16-tools-debuginfo-1.6.40-150600.3.17.1</li>
<li>libpng16-16-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (x86_64)
<ul>
<li>libpng16-16-32bit-1.6.40-150600.3.17.1</li>
<li>libpng16-compat-devel-32bit-1.6.40-150600.3.17.1</li>
<li>libpng16-devel-32bit-1.6.40-150600.3.17.1</li>
<li>libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (aarch64_ilp32)
<ul>
<li>libpng16-16-64bit-debuginfo-1.6.40-150600.3.17.1</li>
<li>libpng16-16-64bit-1.6.40-150600.3.17.1</li>
<li>libpng16-compat-devel-64bit-1.6.40-150600.3.17.1</li>
<li>libpng16-devel-64bit-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
<ul>
<li>libpng16-compat-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-debugsource-1.6.40-150600.3.17.1</li>
<li>libpng16-16-debuginfo-1.6.40-150600.3.17.1</li>
<li>libpng16-16-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
Basesystem Module 15-SP7 (x86_64)
<ul>
<li>libpng16-16-32bit-1.6.40-150600.3.17.1</li>
<li>libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>libpng16-compat-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-debugsource-1.6.40-150600.3.17.1</li>
<li>libpng16-16-debuginfo-1.6.40-150600.3.17.1</li>
<li>libpng16-16-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)
<ul>
<li>libpng16-16-32bit-1.6.40-150600.3.17.1</li>
<li>libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
<ul>
<li>libpng16-compat-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-devel-1.6.40-150600.3.17.1</li>
<li>libpng16-debugsource-1.6.40-150600.3.17.1</li>
<li>libpng16-16-debuginfo-1.6.40-150600.3.17.1</li>
<li>libpng16-16-1.6.40-150600.3.17.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
<ul>
<li>libpng16-16-32bit-1.6.40-150600.3.17.1</li>
<li>libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-33416.html">https://www.suse.com/security/cve/CVE-2026-33416.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-33636.html">https://www.suse.com/security/cve/CVE-2026-33636.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260754">https://bugzilla.suse.com/show_bug.cgi?id=1260754</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260755">https://bugzilla.suse.com/show_bug.cgi?id=1260755</a>
</li>
</ul>
</div>