A integer overflow that can lead to a buffer overrread in the XRes QueryResourceBytes Swap Path in the X.Org xwayland before 24.1.15 and X Server before 21.1.26 on 32bit systems could be used by authenticated clients to crash the X server.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
X.Org xwayland unaffected
Version Status Constraints
0 affected < 24.1.15
X.Org xorg-x11-server unaffected
Version Status Constraints
0 affected < 21.1.26

No data.

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Project Subscriptions

Vendors Products
X.org Subscribe
Xorg-x11-server Subscribe
Xwayland Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gitlab.freedesktop.org/xorg/xserver/-/commit/a59678e491a762e504829cac069cf37f4ccafe0d cve-icon cve-icon
History

Fri, 13 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Description A integer overflow that can lead to a buffer overrread in the XRes QueryResourceBytes Swap Path in the X.Org xwayland before 24.1.15 and X Server before 21.1.26 on 32bit systems could be used by authenticated clients to crash the X server.
Title X.Org Server XRes QueryResourceBytes Swap Path Size Overflow
First Time appeared X.org
X.org xorg-x11-server
X.org xwayland
Weaknesses CWE-190
CPEs cpe:2.3:a:x.org:xorg-x11-server:*:*:*:*:*:*:*:*
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*
Vendors & Products X.org
X.org xorg-x11-server
X.org xwayland
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-11-13T14:25:11.368Z

Reserved: 2026-10-12T06:41:23.778Z

Link: CVE-2026-109094

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-13T15:17:30.017

Modified: 2026-11-13T15:17:30.110

Link: CVE-2026-109094

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses