SUSE alert openSUSE-SU-2026:21057-1 (libssh2_org)

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null@suse.de
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openSUSE-SU-2026:21057-1: important: Security update for libssh2_org
Date:
             
 
Tue, 30 Jun 2026 09:48:08 +0200
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<20260630074808.5C3A4FF49@maintenance.suse.de>
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Article
openSUSE security update: security update for libssh2_org
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21057-1
Rating: important
References:

  * bsc#1268530
  * bsc#1268531



Cross-References:

  * CVE-2026-55199
  * CVE-2026-55200



CVSS scores:

  * CVE-2026-55199 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-55200 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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 libssh2_org fixes the following issues

- CVE-2026-55199: pre-Authentication DoS via SSH_MSG_EXT_INFO Handler (bsc#1268530).
- CVE-2026-55200: out-of-Bounds write via Unchecked packet_length in transport.c (bsc#1268531).


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-16.0-1078=1

Package List:

- openSUSE Leap 16.0:

  libssh2-1-1.11.1-160000.4.1
  libssh2-devel-1.11.1-160000.4.1

References:

  * https://www.suse.com/security/cve/CVE-2026-55199.html
  * https://www.suse.com/security/cve/CVE-2026-55200.html