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# Security update for runc

Announcement ID: SUSE-SU-2026:23047-1
Release Date: 2026-08-03T07:15:47Z
Rating: low
References:

* bsc#1268275

Cross-References:

* CVE-2026-41579

CVSS scores:

* CVE-2026-41579 ( SUSE ): 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
* CVE-2026-41579 ( NVD ): 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected Products:

* SUSE Linux Micro 6.0

An update that solves one vulnerability can now be installed.

## Description:

This update for runc fixes the following issues:

* CVE-2026-41579: runc allows a malicious image with a /dev symlink to
trigger
limited host filesystem integrity violations (bsc#1268275).

Changes for runc:

* update to 1.3.6:

* Various integration test improvements. (#5222, #5237, #5226, #5229, #5239,
#5249, #5269, #5287, #5295, #5304)

* When masking directories with `maskPaths`, runc will now re- use a single
`tmpfs` instance (which is not writeable) to reduce the number `tmpfs`
superblocks that need to be reaped when containers die (in particular,
Kubernetes applies masks to per-CPU sysfs directories which get expensive
quickly).

* update to 1.3.5

* Recursive atime-related mount flags (rrelatime et al.) are now applied
properly. (#5115, #5098)

* PR #4757 caused a regression that resulted in spurious cannot start a
container that has stopped errors when running runc create and has thus
been
reverted. (#5158, #5153, #5151, #4645, #4757)
* Updated builds to Go 1.25, libseccomp v2.6.0. (#5111, #5053)
* Minor signing keyring updates. (#5146, #5139, #5144, #5148)

## 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:

* SUSE Linux Micro 6.0
zypper in -t patch SUSE-SLE-Micro-6.0-827=1

## Package List:

* SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
* runc-1.3.6-1.1
* runc-debuginfo-1.3.6-1.1

## References:

* https://www.suse.com/security/cve/CVE-2026-41579.html
* https://bugzilla.suse.com/show_bug.cgi?id=1268275

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<div class="container">
<h1>Security update for runc</h1>

<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:23047-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-08-03T07:15:47Z</td>
</tr>

<tr>
<th>Rating:</th>
<td>low</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>

<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1268275">bsc#1268275</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-2026-41579.html">CVE-2026-41579</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-2026-41579</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:N/UI:R/S:U/C:N/I:L/A:N</span>
</li>

<li class="list-group-item">
<span
class="cvss-reference">CVE-2026-41579</span>
<span class="cvss-source">
(

NVD

):
</span>
<span
class="cvss-score">3.3</span>
<span
class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N</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 one vulnerability can now be
installed.</p>

<h2>Description:</h2>

<p>This update for runc fixes the following issues:</p>
<ul>
<li>CVE-2026-41579: runc allows a malicious image with a /dev symlink to
trigger limited host filesystem integrity
violations (bsc#1268275).</li>
</ul>
<p>Changes for runc:</p>
<ul>
<li>
<p>update to 1.3.6:</p>
</li>
<li>
<p>Various integration test improvements. (#5222, #5237, #5226,
#5229, #5239, #5249, #5269, #5287, #5295, #5304)</p>
</li>
<li>
<p>When masking directories with <code>maskPaths</code>, runc
will now re-
use a single <code>tmpfs</code> instance (which is not writeable)
to
reduce the number <code>tmpfs</code> superblocks that need to be
reaped
when containers die (in particular, Kubernetes applies masks
to per-CPU sysfs directories which get expensive quickly).</p>
</li>
<li>
<p>update to 1.3.5</p>
</li>
<li>
<p>Recursive atime-related mount flags (rrelatime et al.) are now applied
properly. (#5115, #5098)</p>
</li>
<li>PR #4757 caused a regression that resulted in spurious
cannot start a container that has stopped errors when
running runc create and has thus been reverted. (#5158,
#5153, #5151, #4645, #4757)</li>
<li>Updated builds to Go 1.25, libseccomp v2.6.0. (#5111,
#5053)</li>
<li>Minor signing keyring updates. (#5146, #5139, #5144,
#5148)</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-6.0-827=1</code>

</li>

</ul>

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

<li>
SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
<ul>

<li>runc-1.3.6-1.1</li>

<li>runc-debuginfo-1.3.6-1.1</li>

</ul>
</li>

</ul>

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

<li>
<a href="https://www.suse.com/security/cve/CVE-2026-41579.html">https://www.suse.com/security/cve/CVE-2026-41579.html</a>
</li>

<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1268275">https://bugzilla.suse.com/show_bug.cgi?id=1268275</a>
</li>

</ul>

</div>

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