What is GHSA-qqmw-j3g8-423j?

GHSA-qqmw-j3g8-423j is a security advisory published by GitHub Security Advisories with High severity. A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before...

Which CVE IDs does GHSA-qqmw-j3g8-423j cover?

GHSA-qqmw-j3g8-423j covers the following CVE IDs: CVE-2026-93519. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-qqmw-j3g8-423j?

GHSA-qqmw-j3g8-423j has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-qqmw-j3g8-423jHighCVSS 7.8

A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before...

Vendor

GitHub Security Advisories

Published

October 28, 2026

Last Modified

October 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-93519 →

📋 Description

A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-93519
https://gitlab.freedesktop.org/xorg/xserver/-/commit/1f42cc1f00d9c6d46978ae82dba8a52f4d902369
https://github.com/advisories/GHSA-qqmw-j3g8-423j