openSUSE-SU-2026:21317-1: important: Security update for libxml2

openSUSE security update: security update for libxml2
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Announcement ID: openSUSE-SU-2026:21317-1
Rating: important
References:

  * bsc#1262719
  * bsc#1269790



Cross-References:

  * CVE-2026-11979
  * CVE-2026-6732



CVSS scores:

  * CVE-2026-11979 ( SUSE ): 7 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-11979 ( SUSE ): 7.1 CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-6732 ( SUSE ): 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-6732 ( SUSE ): 6 CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected Products:

         openSUSE Leap 16.0

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An update that solves 2 vulnerabilities and has 2 bug fixes can now be installed.

Description:

This update for libxml2 fixes the following issues

- CVE-2026-6732: crafted XSD-validated document can cause a denial of service (bsc#1262719).
- CVE-2026-11979: stack-based buffer overflows in the `xmlcatalog` utility when running in `--shell` mode (bsc#1269790).


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-16.0-1220=1

Package List:

- openSUSE Leap 16.0:

  libxml2-2-2.13.8-160000.5.1
  libxml2-devel-2.13.8-160000.5.1
  libxml2-doc-2.13.8-160000.5.1
  libxml2-tools-2.13.8-160000.5.1
  python313-libxml2-2.13.8-160000.5.1

References:

  * https://www.suse.com/security/cve/CVE-2026-11979.html
  * https://www.suse.com/security/cve/CVE-2026-6732.html