<div class="container">
<h1>Security update for the Linux Kernel</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2023:4358-1</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=1212051">bsc#1212051</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1214842">bsc#1214842</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215095">bsc#1215095</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215467">bsc#1215467</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215518">bsc#1215518</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215745">bsc#1215745</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215858">bsc#1215858</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215860">bsc#1215860</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215861">bsc#1215861</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1216046">bsc#1216046</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-2023-2163.html">CVE-2023-2163</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-3111.html">CVE-2023-3111</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-34324.html">CVE-2023-34324</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-3777.html">CVE-2023-3777</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-39189.html">CVE-2023-39189</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-39192.html">CVE-2023-39192</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-39193.html">CVE-2023-39193</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-39194.html">CVE-2023-39194</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-42754.html">CVE-2023-42754</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-2023-2163</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-2023-2163</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">10.0</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-3111</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.7</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-3111</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-2023-34324</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.7</span>
<span class="cvss-vector">CVSS:3.1/AV:A/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-2023-3777</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-2023-3777</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-2023-39189</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.4</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-39189</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.1</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-39192</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-39192</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.7</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-39193</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.1</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-39193</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.1</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-39194</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">3.2</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-39194</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">3.2</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-42754</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-2023-42754</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 Enterprise Micro 5.1</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.2</li>
<li class="list-group-item">SUSE Linux Enterprise Micro for Rancher 5.2</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves nine vulnerabilities and has one security fix can now be installed.</p>
<h2>Description:</h2>
<p>The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security and bugfixes.</p>
<p>The following security bugs were fixed:</p>
<ul>
<li>CVE-2023-2163: Fixed an incorrect verifier pruning in BPF that could lead to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape. (bsc#1215518)</li>
<li>CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nf_tables component can be exploited to achieve local privilege escalation. (bsc#1215095)</li>
<li>CVE-2023-34324: Fixed a possible deadlock in Linux kernel event handling. (bsc#1215745).</li>
<li>CVE-2023-39189: Fixed a flaw in the Netfilter subsystem that could allow a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. (bsc#1216046)</li>
<li>CVE-2023-3111: Fixed a use-after-free vulnerability in prepare_to_relocate in fs/btrfs/relocation.c (bsc#1212051).</li>
<li>CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).</li>
<li>CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).</li>
<li>CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).</li>
<li>CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).</li>
</ul>
<p>The following non-security bugs were fixed:</p>
<ul>
<li>nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid() (bsc#1214842).</li>
</ul>
<h2>Special Instructions and Notes:</h2>
<ul>
<li>Please reboot the system after installing this update.</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 Micro 5.1
<br/>
<code>zypper in -t patch SUSE-SUSE-MicroOS-5.1-2023-4358=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.2
<br/>
<code>zypper in -t patch SUSE-SUSE-MicroOS-5.2-2023-4358=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro for Rancher 5.2
<br/>
<code>zypper in -t patch SUSE-SUSE-MicroOS-5.2-2023-4358=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Micro 5.1 (nosrc x86_64)
<ul>
<li>kernel-rt-5.3.18-150300.149.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.1 (x86_64)
<ul>
<li>kernel-rt-debuginfo-5.3.18-150300.149.1</li>
<li>kernel-rt-debugsource-5.3.18-150300.149.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.2 (nosrc x86_64)
<ul>
<li>kernel-rt-5.3.18-150300.149.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.2 (x86_64)
<ul>
<li>kernel-rt-debuginfo-5.3.18-150300.149.1</li>
<li>kernel-rt-debugsource-5.3.18-150300.149.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro for Rancher 5.2 (nosrc x86_64)
<ul>
<li>kernel-rt-5.3.18-150300.149.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro for Rancher 5.2 (x86_64)
<ul>
<li>kernel-rt-debuginfo-5.3.18-150300.149.1</li>
<li>kernel-rt-debugsource-5.3.18-150300.149.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-2163.html">https://www.suse.com/security/cve/CVE-2023-2163.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-3111.html">https://www.suse.com/security/cve/CVE-2023-3111.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-34324.html">https://www.suse.com/security/cve/CVE-2023-34324.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-3777.html">https://www.suse.com/security/cve/CVE-2023-3777.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-39189.html">https://www.suse.com/security/cve/CVE-2023-39189.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-39192.html">https://www.suse.com/security/cve/CVE-2023-39192.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-39193.html">https://www.suse.com/security/cve/CVE-2023-39193.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-39194.html">https://www.suse.com/security/cve/CVE-2023-39194.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-42754.html">https://www.suse.com/security/cve/CVE-2023-42754.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1212051">https://bugzilla.suse.com/show_bug.cgi?id=1212051</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1214842">https://bugzilla.suse.com/show_bug.cgi?id=1214842</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215095">https://bugzilla.suse.com/show_bug.cgi?id=1215095</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215467">https://bugzilla.suse.com/show_bug.cgi?id=1215467</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215518">https://bugzilla.suse.com/show_bug.cgi?id=1215518</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215745">https://bugzilla.suse.com/show_bug.cgi?id=1215745</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215858">https://bugzilla.suse.com/show_bug.cgi?id=1215858</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215860">https://bugzilla.suse.com/show_bug.cgi?id=1215860</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1215861">https://bugzilla.suse.com/show_bug.cgi?id=1215861</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1216046">https://bugzilla.suse.com/show_bug.cgi?id=1216046</a>
</li>
</ul>
</div>