Sicherheit: Denial of Service in Linux (Live Patch 10 SLE 15 SP5)

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# Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP5)

Announcement ID: SUSE-SU-2024:1278-1
Rating: important
References:

* bsc#1219296

Cross-References:

* CVE-2023-52340

CVSS scores:

* CVE-2023-52340 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

* openSUSE Leap 15.5
* SUSE Linux Enterprise High Performance Computing 15 SP5
* SUSE Linux Enterprise Live Patching 15-SP5
* SUSE Linux Enterprise Micro 5.5
* SUSE Linux Enterprise Real Time 15 SP5
* SUSE Linux Enterprise Server 15 SP5
* SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves one vulnerability can now be installed.

## Description:

This update for the Linux Kernel 5.14.21-150500_55_49 fixes one issue.

The following security issue was fixed:

* CVE-2023-52340: Fixed ICMPv6 “Packet Too Big” packets force a DoS of the
Linux kernel by forcing 100% CPU (bsc#1219296).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

* openSUSE Leap 15.5
zypper in -t patch SUSE-2024-1278=1

* SUSE Linux Enterprise Live Patching 15-SP5
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2024-1278=1

## Package List:

* openSUSE Leap 15.5 (ppc64le s390x x86_64)
* kernel-livepatch-SLE15-SP5_Update_10-debugsource-2-150500.11.8.1
* kernel-livepatch-5_14_21-150500_55_49-default-debuginfo-2-150500.11.8.1
* kernel-livepatch-5_14_21-150500_55_49-default-2-150500.11.8.1
* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
* kernel-livepatch-SLE15-SP5_Update_10-debugsource-2-150500.11.8.1
* kernel-livepatch-5_14_21-150500_55_49-default-debuginfo-2-150500.11.8.1
* kernel-livepatch-5_14_21-150500_55_49-default-2-150500.11.8.1

## References:

* https://www.suse.com/security/cve/CVE-2023-52340.html
* https://bugzilla.suse.com/show_bug.cgi?id=1219296

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<div class="container">
<h1>Security update for the Linux Kernel (Live Patch 10 for SLE 15
SP5)</h1>

<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2024:1278-1</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=1219296">bsc#1219296</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-2023-52340.html">CVE-2023-52340</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-2023-52340</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>

</ul>
</td>
</tr>

<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">

<li class="list-group-item">openSUSE Leap
15.5</li>

<li class="list-group-item">SUSE Linux
Enterprise High Performance Computing 15 SP5</li>

<li class="list-group-item">SUSE Linux
Enterprise Live Patching 15-SP5</li>

<li class="list-group-item">SUSE Linux
Enterprise Micro 5.5</li>

<li class="list-group-item">SUSE Linux
Enterprise Real Time 15 SP5</li>

<li class="list-group-item">SUSE Linux
Enterprise Server 15 SP5</li>

<li class="list-group-item">SUSE Linux
Enterprise Server for SAP Applications 15 SP5</li>

</ul>
</td>
</tr>
</tbody>
</table>

<p>An update that solves one vulnerability can now be
installed.</p>

<h2>Description:</h2>

<p>This update for the Linux Kernel 5.14.21-150500_55_49 fixes one
issue.</p>
<p>The following security issue was fixed:</p>
<ul>
<li>CVE-2023-52340: Fixed ICMPv6 “Packet Too Big” packets force a DoS of
the Linux kernel by forcing 100% CPU (bsc#1219296).</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 15.5

<br/>
<code>zypper in -t patch
SUSE-2024-1278=1</code>

</li>

<li class="list-group-item">
SUSE Linux Enterprise Live Patching 15-SP5

<br/>
<code>zypper in -t patch
SUSE-SLE-Module-Live-Patching-15-SP5-2024-1278=1</code>

</li>

</ul>

<h2>Package List:</h2>
<ul>

<li>
openSUSE Leap 15.5 (ppc64le s390x x86_64)
<ul>

<li>kernel-livepatch-SLE15-SP5_Update_10-debugsource-2-150500.11.8.1</li>

<li>kernel-livepatch-5_14_21-150500_55_49-default-debuginfo-2-150500.11.8.1</li>

<li>kernel-livepatch-5_14_21-150500_55_49-default-2-150500.11.8.1</li>

</ul>
</li>

<li>
SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x
x86_64)
<ul>

<li>kernel-livepatch-SLE15-SP5_Update_10-debugsource-2-150500.11.8.1</li>

<li>kernel-livepatch-5_14_21-150500_55_49-default-debuginfo-2-150500.11.8.1</li>

<li>kernel-livepatch-5_14_21-150500_55_49-default-2-150500.11.8.1</li>

</ul>
</li>

</ul>

<h2>References:</h2>
<ul>

<li>
<a href="https://www.suse.com/security/cve/CVE-2023-52340.html">https://www.suse.com/security/cve/CVE-2023-52340.html</a>
</li>

<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1219296">https://bugzilla.suse.com/show_bug.cgi?id=1219296</a>
</li>

</ul>

</div>

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