SUSE-SU-2026:2226-1: important: Security update for xorg-x11-server

[SLE-SECURITY-UPDATES]

# Security update for xorg-x11-server

Announcement ID: SUSE-SU-2026:2226-1  
Release Date: 2026-06-02T08:42:33Z  
Rating: important  
References:

  * bsc#1266294
  * bsc#1266295
  * bsc#1266296
  * bsc#1266297
  * bsc#1266298
  * bsc#1266299
  * bsc#1266300
  * bsc#1266301
  * bsc#1266302

  
Affected Products:

  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that has nine security fixes can now be installed.

## Description:

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

  * CreateSaverWindow Use-After-Free Information Disclosure. (bsc#1266301)
  * DRI2 DRIGetBuffers/DRIGetBuffersWithFormat Out-Of-Bounds Write.
    (bsc#1266302)
  * Font Alias Stack-based Buffer Overflow. (bsc#1266294)
  * GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write. (bsc#1266300)
  * XKB Key Types Stack-based Buffer Overflow. (bsc#1266296)
  * XKB SetMap Request Stack-based Buffer Overflow. (bsc#1266297)
  * XSYNC Use-After-Free in FreeCounter(). (bsc#1266298)
  * XSYNC Use-After-Free in miSyncDestroyFence(). (bsc#1266295)
  * XSYNC Use-After-Free in SyncChangeCounter(). (bsc#1266299)

## 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:

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2026-2226=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2226=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2226=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    * xorg-x11-server-debugsource-21.1.11-150600.5.28.1
    * xorg-x11-server-debuginfo-21.1.11-150600.5.28.1
    * xorg-x11-server-21.1.11-150600.5.28.1
    * xorg-x11-server-extra-debuginfo-21.1.11-150600.5.28.1
    * xorg-x11-server-sdk-21.1.11-150600.5.28.1
    * xorg-x11-server-Xvfb-21.1.11-150600.5.28.1
    * xorg-x11-server-extra-21.1.11-150600.5.28.1
    * xorg-x11-server-source-21.1.11-150600.5.28.1
    * xorg-x11-server-Xvfb-debuginfo-21.1.11-150600.5.28.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * xorg-x11-server-debugsource-21.1.11-150600.5.28.1
    * xorg-x11-server-debuginfo-21.1.11-150600.5.28.1
    * xorg-x11-server-extra-debuginfo-21.1.11-150600.5.28.1
    * xorg-x11-server-21.1.11-150600.5.28.1
    * xorg-x11-server-sdk-21.1.11-150600.5.28.1
    * xorg-x11-server-Xvfb-21.1.11-150600.5.28.1
    * xorg-x11-server-extra-21.1.11-150600.5.28.1
    * xorg-x11-server-Xvfb-debuginfo-21.1.11-150600.5.28.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * xorg-x11-server-debugsource-21.1.11-150600.5.28.1
    * xorg-x11-server-debuginfo-21.1.11-150600.5.28.1
    * xorg-x11-server-21.1.11-150600.5.28.1
    * xorg-x11-server-extra-debuginfo-21.1.11-150600.5.28.1
    * xorg-x11-server-sdk-21.1.11-150600.5.28.1
    * xorg-x11-server-Xvfb-21.1.11-150600.5.28.1
    * xorg-x11-server-extra-21.1.11-150600.5.28.1
    * xorg-x11-server-Xvfb-debuginfo-21.1.11-150600.5.28.1

## References:

  * https://bugzilla.suse.com/show_bug.cgi?id=1266294
  * https://bugzilla.suse.com/show_bug.cgi?id=1266295
  * https://bugzilla.suse.com/show_bug.cgi?id=1266296
  * https://bugzilla.suse.com/show_bug.cgi?id=1266297
  * https://bugzilla.suse.com/show_bug.cgi?id=1266298
  * https://bugzilla.suse.com/show_bug.cgi?id=1266299
  * https://bugzilla.suse.com/show_bug.cgi?id=1266300
  * https://bugzilla.suse.com/show_bug.cgi?id=1266301
  * https://bugzilla.suse.com/show_bug.cgi?id=1266302

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