SUSE alert openSUSE-SU-2026:21113-1 (libyang)

From:
             
 
null@suse.de
To:
             
 
security-announce@lists.opensuse.org
Subject:
             
 
openSUSE-SU-2026:21113-1: important: Security update for libyang
Date:
             
 
Tue, 30 Jun 2026 09:48:25 +0200
Message-ID:
             
 
<20260630074825.C3237FF48@maintenance.suse.de>
Archive-link:
             
 
Article
openSUSE security update: security update for libyang
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21113-1
Rating: important
References:

  * bsc#1265330
  * bsc#1266316



Cross-References:

  * CVE-2026-41401
  * CVE-2026-44673



CVSS scores:

  * CVE-2026-41401 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-41401 ( SUSE ): 9.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-44673 ( SUSE ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-44673 ( SUSE ): 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

Affected Products:

         openSUSE Leap 16.0

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

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

Description:

This update for libyang fixes the following issues

- CVE-2026-41401: use-after-free in `lyd_parser_set_data_flags` when processing crafted YANG XML
documents with specific
  metadata attributes (bsc#1266316).
- CVE-2026-44673: integer overflow in `lyb_read_string()` of `src/parser_lyb.c` leads to heap
buffer overflow when
  parsing a maliciously crafted LYB binary blob (bsc#1265330).


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-16.0-978=1

Package List:

- openSUSE Leap 16.0:

  libyang-devel-2.1.148-160000.4.1
  libyang-doc-2.1.148-160000.4.1
  libyang2-2.1.148-160000.4.1
  yang-tools-2.1.148-160000.4.1

References:

  * https://www.suse.com/security/cve/CVE-2026-41401.html
  * https://www.suse.com/security/cve/CVE-2026-44673.html