Re: Unexecutable stack
Martin Dalecki (dalecki@cs.net.pl)
Mon, 27 Dec 1999 22:49:43 +0100
Khimenko Victor wrote:
>
> In <38673F5C.1010C79A@katren.ru> Mike Karmyshev (mike@katren.ru) wrote:
> > Hello.
> > I've recently played a bit with Solar Designer's patch and it looks that
> > it doesn't have any
> > significant overhead. Shoudn't it be in the kernel by default(at
> > least,SECURE_STACK)?
>
> Last time when this question was raised was more then year ago (if I recall
> correctly) and Linus said that his feeling about unexecutable stack is that
> it does not make exploits impossible but insted give you false sense of safety.
> So answer is "no". You can add such patch by hands if you wish...
And it would prevent anything from working which is emplying the stack
as a trampoline to pass around ... guess what ... for example thrown
exceptions.
--
Marcin Dalecki
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