Missing length validation was found in MIT-SCREEN-SAVER extension. Upstream patch: https://cgit.freedesktop.org/xorg/xserver/commit/?id=cad5a1050b7184d828aef9c1dd151c3ab649d37e
Acknowledgments: Name: the Xorg project
Created xorg-x11-server tracking bugs for this issue: Affects: fedora-all [bug 1509258]