SUSE-SU-2026:2792-1: important: Security update for xorg-x11-server

[SLE-SECURITY-UPDATES]

# Security update for xorg-x11-server

Announcement ID: SUSE-SU-2026:2792-1  
Release Date: 2026-07-08T07:55:40Z  
Rating: important  
References:

  * bsc#1268893

  
Cross-References:

  * CVE-2026-55999

  
CVSS scores:

  * CVE-2026-55999 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-55999 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-55999 ( NVD ):  8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for xorg-x11-server fixes the following issue

  * CVE-2026-55999: missing bounds check in `glamor_font_get` can lead to a heap
    buffer overflow when a font loaded from a malicious PCF file is processed
    (bsc#1268893).

## 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 Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2792=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2792=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * xorg-x11-server-extra-1.19.6-10.105.1
    * xorg-x11-server-debuginfo-1.19.6-10.105.1
    * xorg-x11-server-1.19.6-10.105.1
    * xorg-x11-server-extra-debuginfo-1.19.6-10.105.1
    * xorg-x11-server-debugsource-1.19.6-10.105.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * xorg-x11-server-extra-1.19.6-10.105.1
    * xorg-x11-server-debuginfo-1.19.6-10.105.1
    * xorg-x11-server-1.19.6-10.105.1
    * xorg-x11-server-extra-debuginfo-1.19.6-10.105.1
    * xorg-x11-server-debugsource-1.19.6-10.105.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-55999.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1268893

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