Resolved Bugs
1232131 – CVE-2015-3164 xorg-x11-server: Xwayland allows unconditional open access to display [fedora-all]<br
Upstream stable release of xserver 1.17.2
fix bug with glamor and overlapping copies
(CVE-2015-3164) Due to an omission in authentication setup, the XWayland server would start up in non-authenticating mode, meaning that any client with access to the server’s UNIX socket was able to connect to the server and use it as a regular client. http://lists.freedesktop.org/archives/wayland-devel/2015-June/022548.html