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Date: Thu, 29 Apr 2004 23:55:07 +0200 From: Pavel Machek <pavel@....cz> To: Crispin Cowan <crispin@...unix.com> Cc: Hilmi Ozdoganoglu <cyprian@...due.edu>, Dave Paris <dparis@...orks.com>, bugtraq@...urityfocus.com Subject: Re: http://www.smashguard.org Hi! > >The idea is not to create "custom CPUs" but to have our modification > >picked up by major vendors. Clearly there is interest in applying > >hardware to solve security issues based on the latest press releases > >from AMD that AMD chips include buffer-overflow protection (see > >Computer World, January 15, 2004). > > > As Theo said, the AMD buffer overflow "protection" is nothing more than > sensible separation of R and X bits per page, fixing a glaring and Actually it is not "sensible", and it is not separation. You can have r--, r-x, but you can't have --x. Pavel -- 934a471f20d6580d5aad759bf0d97ddc
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