Messages in this thread | | | Subject | Re: Using x86 segments against NULL pointer deference exploit | From | Markku Savela <> | Date | Tue, 10 Nov 2009 18:46:49 +0200 |
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I'm wondering why on architectures that actually have EXECUTE permission memory management, the user space is mapped into kernel with EXECUTE enabled!!!??
If the user space were not mapped with EXECUTE enabled, the restriction of mapping the 0-page in user space is not required anymore.
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