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SUSE 2026 xorg-x11-server Important Fix for Multiple Issues 1331-1

suse
Calendar Grey April 15, 2026
Dist Suse Esm H88
An important update for xorg-x11-server on SUSE addresses multiple vulnerabilities, increasing system security. Act now!
An update that solves five vulnerabilities can now be installed.

Summary

## 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 15.6 zypper in -t patch SUSE-2026-1331=1 openSUSE-SLE-15.6-2026-1331=1 * SUSE Linux Enterprise Server 15 SP6 LTSS

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE DoS important Xorg X11 Server

References

* bsc#1260922

* bsc#1260923

* bsc#1260924

* bsc#1260925

* bsc#1260926

Cross-

* 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1331-1
Release Date: 2026-04-14T17:11:42Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE DoS important Xorg X11 Server

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