What is GHSA-q227-m872-459m?

GHSA-q227-m872-459m is a security advisory published by GitHub Security Advisories with Medium severity. A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X...

Which CVE IDs does GHSA-q227-m872-459m cover?

GHSA-q227-m872-459m covers the following CVE IDs: CVE-2026-93515. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-q227-m872-459mMedium

A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X...

Vendor

GitHub Security Advisories

Published

October 28, 2026

Last Modified

October 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-93515 →

📋 Description

A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-93515
https://gitlab.freedesktop.org/xorg/xserver/-/commit/1b6955c3108e6b43433aefe860070708e6f43d1b
https://github.com/advisories/GHSA-q227-m872-459m