According to the info in http://download2.rapid7.com/r7-0025/ this bug is a bit more serious & is exploitable. I don't know of any fixed nvidia binary driver at this time.
** This bug has been flagged as a security issue -- Page crashes X https://launchpad.net/bugs/46034 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
