Fair enough, but it still says that Xorg tried and failed to find an adequate fix. If the kernel fix prevents privilege escalation, then what we're left with is merely a potentially annoying bug. Sure, it would be nice to have the bug fixed, but until someone comes up with a fix that works, it's going to be hard to fix it! (The first rule of Tautology Club is the first rule of Tautology Club.)
In any case, runaway memory use already puts your processes in the whimsical hands of the OOM-killer.