Windows heaps and Cygwin heap

Corinna Vinschen corinna-cygwin@cygwin.com
Fri May 13 09:30:00 GMT 2011


On May 13 10:36, Corinna Vinschen wrote:
> So we now know that we are actually observing a part of the ASLR
> strategy of NT6.  Heap addresses are always randomized.  Yes, there is a
> PE flag which controls ASLR on a per-executable basis, but unfortunately
> this only influences the usage of ASLR for the executable image itself,
> as well as the thread stacks.  There's no way at all to disable heap ASLR.

It appears that I misread.  The PE flag might not influence stack
randomization, but what I found in the net is contradictory.  However,
even if stack ASLR is always on, it seems the preferred addresses of
thread stacks are also in the range below 0x20000000.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat



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