<div class="container">
<h1>Security update for kernel-livepatch-MICRO-6-0-RT_Update_4</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2025:20704-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2025-09-11T15:44:56Z</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=1236207">bsc#1236207</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1242579">bsc#1242579</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1244235">bsc#1244235</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245505">bsc#1245505</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245775">bsc#1245775</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245791">bsc#1245791</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245805">bsc#1245805</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1246030">bsc#1246030</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1248108">bsc#1248108</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-2025-21659.html">CVE-2025-21659</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-21701.html">CVE-2025-21701</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-21999.html">CVE-2025-21999</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-37890.html">CVE-2025-37890</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-38000.html">CVE-2025-38000</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-38001.html">CVE-2025-38001</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-38087.html">CVE-2025-38087</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-38212.html">CVE-2025-38212</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-2025-21659</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.4</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-21659</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.1</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-21701</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-21999</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:N/VI:N/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-21999</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-21999</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.8</span>
<span class="cvss-vector">CVSS:3.1/AV:L/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-2025-37890</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-38000</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.3</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:P/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-2025-38000</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-38001</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.5</span>
<span class="cvss-vector">CVSS:4.0/AV:L/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-2025-38001</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.8</span>
<span class="cvss-vector">CVSS:3.1/AV:L/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-2025-38087</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.3</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:P/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-2025-38087</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-38212</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.5</span>
<span class="cvss-vector">CVSS:4.0/AV:L/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-2025-38212</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.8</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 6.0</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves eight vulnerabilities and has one fix can now be installed.</p>
<h2>Description:</h2>
<p>This update for kernel-livepatch-MICRO-6-0-RT_Update_4 fixes the following issues:</p>
<ul>
<li>CVE-2025-38087: net/sched: fix use-after-free in taprio_dev_notifier (bsc#1245505)</li>
<li>CVE-2025-21999: proc: fix UAF in proc_get_inode() (bsc#1242579)</li>
<li>CVE-2025-38001: net_sched: hfsc: Address reentrant enqueue adding class to eltree twice (bsc#1244235)</li>
<li>CVE-2025-21659: netdev: prevent accessing NAPI instances from another namespace (bsc#1236207)</li>
<li>CVE-2025-38000: sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() (bsc#1245775)</li>
<li>CVE-2025-37890: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (bsc#1245791)</li>
<li>CVE-2025-21701: net: avoid race between device unregistration and ethnl ops (bsc#1245805)</li>
<li>CVE-2025-38212: ipc: fix to protect IPCS lookups using RCU (bsc#1246030)</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 6.0
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-6.0-kernel-110=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Micro 6.0 (x86_64)
<ul>
<li>kernel-livepatch-6_4_0-22-rt-8-1.1</li>
<li>kernel-livepatch-6_4_0-22-rt-debuginfo-8-1.1</li>
<li>kernel-livepatch-MICRO-6-0-RT_Update_4-debugsource-8-1.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-21659.html">https://www.suse.com/security/cve/CVE-2025-21659.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-21701.html">https://www.suse.com/security/cve/CVE-2025-21701.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-21999.html">https://www.suse.com/security/cve/CVE-2025-21999.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-37890.html">https://www.suse.com/security/cve/CVE-2025-37890.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-38000.html">https://www.suse.com/security/cve/CVE-2025-38000.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-38001.html">https://www.suse.com/security/cve/CVE-2025-38001.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-38087.html">https://www.suse.com/security/cve/CVE-2025-38087.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-38212.html">https://www.suse.com/security/cve/CVE-2025-38212.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1236207">https://bugzilla.suse.com/show_bug.cgi?id=1236207</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1242579">https://bugzilla.suse.com/show_bug.cgi?id=1242579</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1244235">https://bugzilla.suse.com/show_bug.cgi?id=1244235</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245505">https://bugzilla.suse.com/show_bug.cgi?id=1245505</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245775">https://bugzilla.suse.com/show_bug.cgi?id=1245775</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245791">https://bugzilla.suse.com/show_bug.cgi?id=1245791</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1245805">https://bugzilla.suse.com/show_bug.cgi?id=1245805</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1246030">https://bugzilla.suse.com/show_bug.cgi?id=1246030</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1248108">https://bugzilla.suse.com/show_bug.cgi?id=1248108</a>
</li>
</ul>
</div>