CVE-2026-88806

Published: Sep 21, 2026Modified: Sep 22, 2026

7.5

Vector

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

Exploitability: 1.6 / Impact: 5.9

Source: meissner@suse.de (Secondary)

Description

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

Related CWEs

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (1)

https://gitlab.freedesktop.org/xorg/lib/libx11/-/merge_requests/309

Source: meissner@suse.de

Timeline

No history available yet.