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SUSE Xwayland Identifies Five Key Threats with Fix 2026-1328-1

suse
Calendar Grey April 15, 2026
Scroller Suse
Update for SUSE xwayland addresses five distinct threats. Implement recommended security measures promptly.
An update that solves five vulnerabilities can now be installed.

Summary

## This update for xwayland 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: * SUSE Linux Enterprise Workstation Extension 15 SP7 zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-1328=1 ## Package List:

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important use-after-free Xwayland

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-2026:1328-1
Release Date: 2026-04-14T17:04:47Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important use-after-free Xwayland

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