Security update for xorg-x11-server

Announcement ID: SUSE-SU-2026:1335-1
Release Date: 2026-04-14T17:28:43Z
Rating: important
References:
Cross-References:
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:
  • openSUSE Leap 15.5
  • SUSE Linux Enterprise High Performance Computing 15 SP5
  • SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  • SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  • SUSE Linux Enterprise Server 15 SP5
  • SUSE Linux Enterprise Server 15 SP5 LTSS
  • SUSE Linux Enterprise Server for SAP Applications 15 SP5

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:

  • openSUSE Leap 15.5
    zypper in -t patch SUSE-2026-1335=1
  • SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1335=1
  • SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1335=1
  • SUSE Linux Enterprise Server 15 SP5 LTSS
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1335=1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP5
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1335=1

Package List:

  • openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64 i586)
    • xorg-x11-server-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-source-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-21.1.4-150500.7.46.1
    • xorg-x11-server-sdk-21.1.4-150500.7.46.1
    • xorg-x11-server-21.1.4-150500.7.46.1
    • xorg-x11-server-debugsource-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-21.1.4-150500.7.46.1
  • SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
    • xorg-x11-server-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-21.1.4-150500.7.46.1
    • xorg-x11-server-sdk-21.1.4-150500.7.46.1
    • xorg-x11-server-21.1.4-150500.7.46.1
    • xorg-x11-server-debugsource-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-21.1.4-150500.7.46.1
  • SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
    • xorg-x11-server-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-21.1.4-150500.7.46.1
    • xorg-x11-server-sdk-21.1.4-150500.7.46.1
    • xorg-x11-server-21.1.4-150500.7.46.1
    • xorg-x11-server-debugsource-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-21.1.4-150500.7.46.1
  • SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    • xorg-x11-server-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-21.1.4-150500.7.46.1
    • xorg-x11-server-sdk-21.1.4-150500.7.46.1
    • xorg-x11-server-21.1.4-150500.7.46.1
    • xorg-x11-server-debugsource-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-21.1.4-150500.7.46.1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
    • xorg-x11-server-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-21.1.4-150500.7.46.1
    • xorg-x11-server-sdk-21.1.4-150500.7.46.1
    • xorg-x11-server-21.1.4-150500.7.46.1
    • xorg-x11-server-debugsource-21.1.4-150500.7.46.1
    • xorg-x11-server-extra-debuginfo-21.1.4-150500.7.46.1
    • xorg-x11-server-Xvfb-21.1.4-150500.7.46.1

References: