What is GHSA-4www-pr66-hmg8?

GHSA-4www-pr66-hmg8 is a security advisory published by GitHub Security Advisories with High severity. A stack buffer overflow in ProcXTestFakeInput DeviceValuator handling in X.Org xwayland before...

Which CVE IDs does GHSA-4www-pr66-hmg8 cover?

GHSA-4www-pr66-hmg8 covers the following CVE IDs: CVE-2026-109093. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-4www-pr66-hmg8High

A stack buffer overflow in ProcXTestFakeInput DeviceValuator handling in X.Org xwayland before...

Vendor

GitHub Security Advisories

Published

November 13, 2026

Last Modified

November 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-109093 →

📋 Description

A stack buffer overflow in ProcXTestFakeInput DeviceValuator handling in X.Org xwayland before 24.1.15 and X server before 21.1.26 could be used by authenticated clients to crash or execute code in the X server.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-109093
https://gitlab.freedesktop.org/xorg/xserver/-/commit/99ce069ae814b39048543062e073320f14723ee0
https://github.com/advisories/GHSA-4www-pr66-hmg8