Re: [Announcement] "Exec Shield", new Linux security feature

[Chuck Ebbert]

> There is another issue: x86 uses relative jumps, so although "ASCII
> armor" addresses aren't easily accessible using return address smashes
> (although the \0 at the end thing is a real issue), you may be able to
> get to them through a jump instruction.

 Does the instruction-pointer-relative data addressing mode added by
AMD64 make these exploits easier?  Maybe someone should be working on a
version of this patch for that platform...