SUSE-SU-2026:1330-1: important: Security update for xorg-x11-server

[SLE-UPDATES]

# Security update for xorg-x11-server

Announcement ID: SUSE-SU-2026:1330-1  
Release Date: 2026-04-14T17:09:03Z  
Rating: important  
References:

  * bsc#1260922
  * bsc#1260923
  * bsc#1260924
  * bsc#1260925
  * bsc#1260926

  
Cross-References:

  * CVE-2026-33999
  * CVE-2026-34000
  * CVE-2026-34001
  * CVE-2026-34002
  * CVE-2026-34003

  
CVSS scores:

  * CVE-2026-33999 ( SUSE ):  6.9
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-33999 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-34000 ( SUSE ):  6.9
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-34000 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-34001 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-34001 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-34002 ( SUSE ):  6.9
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-34002 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-34003 ( SUSE ):  6.9
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-34003 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

  
Affected Products:

  * Basesystem Module 15-SP7
  * Development Tools Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves five vulnerabilities can now be installed.

## Description:

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

  * CVE-2026-33999: XKB integer underflow in XkbSetCompatMap() (bsc#1260922).
  * CVE-2026-34000: XKB out-of-bounds read in CheckSetGeom() (bsc#1260923).
  * CVE-2026-34001: XSYNC use-after-free in miSyncTriggerFence() (bsc#1260924).
  * CVE-2026-34002: XKB out-of-bounds read in CheckModifierMap() (bsc#1260925).
  * CVE-2026-34003: XKB buffer overflow in CheckKeyTypes() (bsc#1260926).

## 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:

  * Development Tools Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP7-2026-1330=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-1330=1

## Package List:

  * Development Tools Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * xorg-x11-server-debuginfo-21.1.15-150700.5.16.1
    * xorg-x11-server-sdk-21.1.15-150700.5.16.1
    * xorg-x11-server-debugsource-21.1.15-150700.5.16.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * xorg-x11-server-extra-debuginfo-21.1.15-150700.5.16.1
    * xorg-x11-server-debugsource-21.1.15-150700.5.16.1
    * xorg-x11-server-extra-21.1.15-150700.5.16.1
    * xorg-x11-server-debuginfo-21.1.15-150700.5.16.1
    * xorg-x11-server-Xvfb-debuginfo-21.1.15-150700.5.16.1
    * xorg-x11-server-21.1.15-150700.5.16.1
    * xorg-x11-server-Xvfb-21.1.15-150700.5.16.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-33999.html
  * https://www.suse.com/security/cve/CVE-2026-34000.html
  * https://www.suse.com/security/cve/CVE-2026-34001.html
  * https://www.suse.com/security/cve/CVE-2026-34002.html
  * https://www.suse.com/security/cve/CVE-2026-34003.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260922
  * https://bugzilla.suse.com/show_bug.cgi?id=1260923
  * https://bugzilla.suse.com/show_bug.cgi?id=1260924
  * https://bugzilla.suse.com/show_bug.cgi?id=1260925
  * https://bugzilla.suse.com/show_bug.cgi?id=1260926

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