What is GHSA-53xc-rrr3-jm2c?

GHSA-53xc-rrr3-jm2c is a security advisory published by GitHub Security Advisories with High severity. An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by...

Which CVE IDs does GHSA-53xc-rrr3-jm2c cover?

GHSA-53xc-rrr3-jm2c covers the following CVE IDs: CVE-2026-93518. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-53xc-rrr3-jm2c?

GHSA-53xc-rrr3-jm2c has a CVSS v3 base score of 7.8, published by GitHub Security Advisories.

GHSA-53xc-rrr3-jm2cHighCVSS 7.8

An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by...

Vendor

GitHub Security Advisories

Published

October 28, 2026

Last Modified

October 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-93518 →

📋 Description

An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code execution in the X server.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-93518
https://gitlab.freedesktop.org/xorg/xserver/-/commit/89101a6c6618f543d7502f2077c7ef1a507af256
https://github.com/advisories/GHSA-53xc-rrr3-jm2c