Re: [RFC] prevention of syscalls from writable segments, breaking bug exploits

[David Huggins-Daines]

Andi Kleen <[EMAIL PROTECTED]> writes:

> On Wed, Jan 03, 2001 at 10:20:37PM -0500, David Huggins-Daines wrote:
> > Dan Aloni <[EMAIL PROTECTED]> writes:
> > 
> > > This preliminary, small patch prevents execution of system calls which
> > > were executed from a writable segment.
> > 
> > How does signal return work, then?
> 
> Newer glibc sets a sa_restorer.

Hmm, maybe sigaction(2) should stop documenting it as "obsolete and
should not be used" then :-)

-- 
David Huggins-Daines            -               [EMAIL PROTECTED]
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