Messages in this thread |  | | Subject | Re: [patch] Add basic sanity checks to the syscall execution patch | | From | Benjamin Herrenschmidt <> | | Date | Fri, 05 Sep 2008 20:14:07 +1000 |
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On Fri, 2008-09-05 at 11:43 +0200, pageexec@freemail.hu wrote: > > I'd have considered taking your email serious if you had left out the > > uncalled and unneeded sarcasm line at the end. > > consider how your whole patch is based on one big self-contradiction. > you already assume that the attacker *can* modify arbitrary kernel memory > (even the otherwise *read-only* syscall table at that), but at the very > same time you're saying he *can't* use the same powers to patch out your > 'protection' or do many other things to evade it. as it is, it's cargo cult > security at its best, reminding one on the Vista kernel's similar 'protection' > mechanism for the service descriptor tables...
Well, I see it a different way ... it will once for all screw up binary modules that try to add syscalls :-)
Ben.
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