8.5
HIGH CVSS 4.0
CVE-2026-109094
X.Org Server XRes QueryResourceBytes Swap Path Size Overflow
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 could be used by authenticated clients to crash the X server.

INFO

Published Date :

Nov. 13, 2026, 2:14 p.m.

Last Modified :

Nov. 13, 2026, 2:15 p.m.

Remotely Exploit :

No

Source :

suse
Affected Products

The following products are affected by CVE-2026-109094 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 X.org xwayland
2 X.org xorg-x11-server
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 4.0 HIGH 404e59f5-483d-4b8a-8e7a-e67604dd8afb
Solution
Update X.Org xwayland and X Server to the latest versions to fix integer overflow.
  • Update xwayland to version 24.1.15 or later.
  • Update X Server to version 21.1.26 or later.
  • Apply vendor-provided security patches.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-109094 vulnerability anywhere in the article.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.