<div class="container">
<h1>Security update for libpcap</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:23737-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-09-14T15:17:59Z</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=1279584">bsc#1279584</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279588">bsc#1279588</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279593">bsc#1279593</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279595">bsc#1279595</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279782">bsc#1279782</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279783">bsc#1279783</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279784">bsc#1279784</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-2026-0799.html">CVE-2026-0799</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-18238.html">CVE-2026-18238</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-18313.html">CVE-2026-18313</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-31911.html">CVE-2026-31911</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-31912.html">CVE-2026-31912</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-6244.html">CVE-2026-6244</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-6554.html">CVE-2026-6554</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-2026-0799</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:L/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-2026-0799</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-0799</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">8.7</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-18238</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-2026-18238</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-2026-18238</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.0</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-18313</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-2026-18313</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-2026-18313</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>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-31911</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.1</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-31911</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:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-31911</span>
<span class="cvss-source">
(
NVD
):
</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:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-31912</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.1</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-31912</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:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-31912</span>
<span class="cvss-source">
(
NVD
):
</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:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-6244</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.1</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-6244</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:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-6244</span>
<span class="cvss-source">
(
NVD
):
</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:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-6554</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">2.4</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-6554</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">3.3</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-6554</span>
<span class="cvss-source">
(
NVD
):
</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: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">SUSE Linux Micro 6.1</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 libpcap fixes the following issues:</p>
<ul>
<li>CVE-2026-0799: the BPF interpreter does not validate values in BPF instructions that load/store a value from/to a
scratch memory register and allows for OOB access (bsc#1279782).</li>
<li>CVE-2026-6244: libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the
immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero
(bsc#1279595).</li>
<li>CVE-2026-6554: libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction implements looping via backward
jumps, but it does not limit the number of loop iterations. Can cause infinite loop (bsc#1279584).</li>
<li>CVE-2026-18238: <code>rpcap</code> client code that processes a <code>RPCAP_MSG_PACKET</code> message received from the server incorrectly
validates its headers and allows for an OOB access (bsc#1279783).</li>
<li>CVE-2026-18313: <code>rpcapd</code> allocates up to 65536 bytes per each <code>RPCAP_MSG_UPDATEFILTER_REQ</code> or <code>RPCAP_MSG_STARTCAP_REQ</code>
message received from the client and never frees the memory (bsc#1279784).</li>
<li>CVE-2026-31911: libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode.
In particular uncommon use cases a crafted filter program can terminate the OS process (bsc#1279588).</li>
<li>CVE-2026-31912: libpcap BPF interpreter detects neither reaching the end of the filter program buffer due to lack of a
return instruction nor executing a jump instruction with an offset that translates to a pointer outside of the buff
(bsc#1279593).</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 Micro 6.1
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-6.1-727</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
<ul>
<li>libpcap1-1.10.4-slfo.1.1_3.1</li>
<li>libpcap1-debuginfo-1.10.4-slfo.1.1_3.1</li>
<li>libpcap-debugsource-1.10.4-slfo.1.1_3.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-0799.html">https://www.suse.com/security/cve/CVE-2026-0799.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-18238.html">https://www.suse.com/security/cve/CVE-2026-18238.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-18313.html">https://www.suse.com/security/cve/CVE-2026-18313.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-31911.html">https://www.suse.com/security/cve/CVE-2026-31911.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-31912.html">https://www.suse.com/security/cve/CVE-2026-31912.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-6244.html">https://www.suse.com/security/cve/CVE-2026-6244.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-6554.html">https://www.suse.com/security/cve/CVE-2026-6554.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279584">https://bugzilla.suse.com/show_bug.cgi?id=1279584</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279588">https://bugzilla.suse.com/show_bug.cgi?id=1279588</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279593">https://bugzilla.suse.com/show_bug.cgi?id=1279593</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279595">https://bugzilla.suse.com/show_bug.cgi?id=1279595</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279782">https://bugzilla.suse.com/show_bug.cgi?id=1279782</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279783">https://bugzilla.suse.com/show_bug.cgi?id=1279783</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1279784">https://bugzilla.suse.com/show_bug.cgi?id=1279784</a>
</li>
</ul>
</div>