Hole in 64-bit Linux kernel provides root rights

[Bryn M. Reeves]

On 09/20/2010 04:06 PM, JD wrote:
> What is  ORIG_RAX  in the code?
> It is undefined! Explain how you could have possibly compiled it let 
> alone run it.

It's an index into an array of 8-byte register values returned by the
ptrace API. It's defined in sys/reg.h:

$ grep ORIG_RAX /usr/include/sys/reg.h
# define ORIG_RAX 15

And this header is included in the code:
$ grep 'sys\/reg\.h' /tmp/robert_you_suck.c
#include <sys/reg.h>

Regards,
Bryn.