This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-88806 →

DEBIAN-CVE-2026-88806

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.

Original description

The description as published by the source.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Debian:12 libx11

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 libx11

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 libx11

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]