PROT_EXEC mmap/mprotect, i386 PAE + NX broken, x86-64 2.6.17-rc2

Sun Apr 23 11:55:30 CDT 2006

On Sun, Apr 23, 2006 at 11:25:09AM -0500, Tom Spear (Dustin Booker, Dustin Navea) wrote:
...
> >Jesse
> Only if you are talking about hardware based NX, but that is different 
> from what is going on here.  The kernel has software-based NX enabled by 
> default now and that is what is affecting this loader..

The mainline Linux kernel has only hardware NX support, which x86_64 natively
supports.

Software NX (via CS selector) is only in Redhats execshield patch.

Ciao, Marcus