Re: mmap_min_addr and your local LSM (ok, just SELinux)

From: Alan Cox
Date: Tue Jul 28 2009 - 06:01:50 EST


On Tue, 28 Jul 2009 11:21:29 +0200
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:

> Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> writes:
>
> > A dumb question perhaps, but while addling my brain over the tty layer I
> > was wondering if for the specific case of jump through NULL (which seems
> > to be the most common but by no means only problem case that gets
> > exploited) is there any reason we can't set a default breakpoint for
>
> You mean a hardware breakpoint? Hardware break points are a precious
> scarce resource. The people who rely on them would be likely
> unhappy if you take one way from them.

They are a tiny minority and could always turn such protection off.
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