CVE-2015-3418: X.org X Server

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

The ProcPutImage function in dix/dispatch.c in X.Org Server (aka xserver and xorg-server) before 1.16.4 allows attackers to cause a denial of service (divide-by-zero and crash) via a zero-height PutImage request.

Affected products

• X.org X Server: up to and including 1.16.3

Published 2016-12-13. Last modified 2026-06-17.