This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-56003 →

DEBIAN-CVE-2026-56003

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfo...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 libxfont

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.6-1+deb12u1"}]}]

Debian:13 libxfont

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.6-1+deb13u1"}]}]

Debian:14 libxfont

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.0.8-1"}]}]

References

advisory security-tracker.debian.org