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8.5высокая

CVE-2026-55999

Описание

Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.

Затрагиваемое ПО
X.org X serverX.org Xwayland
CVSS
Балл8.5 — высокая
ВекторCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Источники
https://gitlab.freedesktop.org/xorg/xserver/-/commit/fbf7bac22e2c6bd627fb042742a23318263edae1https://www.openwall.com/lists/oss-security/2026/07/08/2