Upgrade to version 7.2 RC3 or higher, as it has been reported to fix this vulnerability. It is also possible to temporarily work around the flaw by implementing the following workaround: Access to the vulnerable code can be prevented when the Render extension is not built into the X binary. This can be accomplished by removing the entry for the Render extension from your X server's configuration file, often stored in /etc/X11 and named xorg.conf or XF86Config-4. To do this, remove the following line from the 'Module' section:
This will prevent the Render extension from loading, which may affect the appearance or operation of some applications.