On Wed, Aug 13, 2014 at 2:27 PM, H. Peter Anvin <h...@zytor.com> wrote: > On 08/13/2014 02:23 PM, Andy Lutomirski wrote: >> On Wed, Aug 13, 2014 at 2:21 PM, H. Peter Anvin <h...@zytor.com> wrote: >>> One thing about this that may be a serious concern: allowing the user to >>> control 8 contiguous bytes of kernel memory may be a security hazard. >> >> I'm confused. What kind of memory? I can control a lot more than 8 >> bytes of stack very easily. >> >> Or are you concerned about 8 contiguous bytes of *executable* memory? >> > > Yes. Useful for some kinds of ROP custom gadgets.
I don't get it. What is ROP ? What is the concern about 8 bytes ? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
