<div class="container">
<h1>Security update for dnsdist</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:23146-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-08-05T09:11:20Z</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=1269201">bsc#1269201</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269202">bsc#1269202</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269203">bsc#1269203</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269204">bsc#1269204</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269205">bsc#1269205</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269206">bsc#1269206</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269207">bsc#1269207</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-2026-40011.html">CVE-2026-40011</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-40208.html">CVE-2026-40208</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-40209.html">CVE-2026-40209</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-40210.html">CVE-2026-40210</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-40211.html">CVE-2026-40211</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-42004.html">CVE-2026-42004</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-42005.html">CVE-2026-42005</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-2026-40011</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.3</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40011</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">3.7</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40011</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">3.7</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40208</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40208</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40208</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">3.7</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40209</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.7</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40209</span>
<span class="cvss-source">
(
SUSE
):
</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>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40209</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40210</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:N/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40210</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.2</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40210</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">4.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40211</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40211</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-40211</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42004</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42004</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42004</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">3.7</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42005</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42005</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-42005</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">SUSE Linux Enterprise Server for SAP applications 16.0</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves seven vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for dnsdist fixes the following issues:</p>
<p>Update to 1.9.15.</p>
<p>Changes for dnsdist:</p>
<ul>
<li>https://www.dnsdist.org/changelog.html#change-1.9.15</li>
<li>https://www.dnsdist.org/changelog.html#change-1.9.14</li>
</ul>
<p>Security issues fixed:</p>
<ul>
<li>CVE-2026-40011: invalid output produced in the prometheus endpoint when a large number of crafted DNS queries are sent
(bsc#1269204).</li>
<li>CVE-2026-40208: processing of DoH3 queries can be delayed via DoH3 GET queries with an invalid DATA frames
(bsc#1269207).</li>
<li>CVE-2026-40209: outgoing TCP connections to backend can get stuck until a timeout occurs when specially crafted IXFR
queries are sent (bsc#1269206).</li>
<li>CVE-2026-40210: out-of-bounds read when <code>SetMacAddrAction</code> is used can lead to uninitialized memory being sent over
the network or a crash (bsc#1269205).</li>
<li>CVE-2026-40211: crafted DNS over HTTP/3 queries can trigger an exception that prevents memory from being freed and can
lead to an OOM condition (bsc#1269203).</li>
<li>CVE-2026-42004: crafted EDNS OPT record will be ignored by filtering rules, but will be rewritten as a valid OPT
record when EDNS Client Subnet is inserted (bsc#1269202).</li>
<li>CVE-2026-42005: crafted web request can cause unlimited memory allocation in the internal web server and lead to a DoS
(bsc#1269201).</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">
SUSE Linux Enterprise Server for SAP applications 16.0
<br/>
<code>zypper in -t patch SUSE-SLES-16.0-1432=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
<ul>
<li>dnsdist-1.9.15-160000.1.1</li>
<li>dnsdist-debugsource-1.9.15-160000.1.1</li>
<li>dnsdist-debuginfo-1.9.15-160000.1.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-40011.html">https://www.suse.com/security/cve/CVE-2026-40011.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-40208.html">https://www.suse.com/security/cve/CVE-2026-40208.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-40209.html">https://www.suse.com/security/cve/CVE-2026-40209.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-40210.html">https://www.suse.com/security/cve/CVE-2026-40210.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-40211.html">https://www.suse.com/security/cve/CVE-2026-40211.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-42004.html">https://www.suse.com/security/cve/CVE-2026-42004.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-42005.html">https://www.suse.com/security/cve/CVE-2026-42005.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269201">https://bugzilla.suse.com/show_bug.cgi?id=1269201</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269202">https://bugzilla.suse.com/show_bug.cgi?id=1269202</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269203">https://bugzilla.suse.com/show_bug.cgi?id=1269203</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269204">https://bugzilla.suse.com/show_bug.cgi?id=1269204</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269205">https://bugzilla.suse.com/show_bug.cgi?id=1269205</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269206">https://bugzilla.suse.com/show_bug.cgi?id=1269206</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269207">https://bugzilla.suse.com/show_bug.cgi?id=1269207</a>
</li>
</ul>
</div>