SUSE alert openSUSE-SU-2026:20888-1 (apptainer)

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null@suse.de
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security-announce@lists.opensuse.org
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openSUSE-SU-2026:20888-1: important: Security update for apptainer
Date:
             
 
Wed, 03 Jun 2026 17:51:22 +0200
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<20260603155122.AAFC4FCE4@maintenance.suse.de>
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Article
openSUSE security update: security update for apptainer
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:20888-1
Rating: important
References:

  * bsc#1266656



Cross-References:

  * CVE-2026-39821



CVSS scores:

  * CVE-2026-39821 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39821 ( SUSE ): 9.1 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

An update that solves one vulnerability and has one bug fix can now be installed.

Description:

This update for apptainer fixes the following issues:

Changes in apptainer:

- CVE-2026-39821: Update golang.org/x/net to 0.55.0. (bsc#1266656)

- Add improved handling of suid-starter:
  * Add system group `apptainer`
  * Make sure, only users belonging to this group are able to
    run the application.
  * Document this in a README and point user to it if execution
    fails.
  Building of the 'suid-root' starter is still optional.


Patch instructions:

   To install this openSUSE security 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 16.0

   zypper in -t patch openSUSE-Leap-16.0-packagehub-290=1

Package List:

- openSUSE Leap 16.0:

  apptainer-1.4.5-bp160.3.1
  apptainer-leap-1.4.5-bp160.3.1

References:

  * https://www.suse.com/security/cve/CVE-2026-39821.html