[CVE-2026-56003] A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in…

Descripción técnica

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.

Puntuación CVSS

Score: 8.5/10 — Severidad: HIGH — Estado NIST: Analyzed

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Productos afectados

Libxfont — X

Debilidades (CWE)

CWE-122

Fuente oficial

Publicado en NIST NVD.