On Sun, Oct 26, 2014 at 10:02:16AM -0700, Andy Lutomirski wrote: > If an attacker can cause a controlled kernel stack overflow, > overwriting the restart block is a very juicy exploit target. > Moving the restart block to struct task_struct prevents this type of > exploit. The hell it does. In a _lot_ of cases current is current_thread_info()->task, which makes your variant just as vulnerable, in addition to being (slightly) more costly. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
