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* [kernel-hardening] mmap guard pages
@ 2011-07-30 18:57 Vasiliy Kulikov
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From: Vasiliy Kulikov @ 2011-07-30 18:57 UTC (permalink / raw)
  To: kernel-hardening

Solar,

What do you think about this?

http://www.openbsd.org/papers/ven05-deraadt/mgp00025.html

In short, each mmap call adds guard pages before and after the allocated
memory.  It should catch overflows/underflows of mmap-based buffers.
AFAICS, it's possible to painlessly (in terms of vm waste) enable it on
x86-64.


Thanks,

-- 
Vasiliy

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2011-07-30 18:57 [kernel-hardening] mmap guard pages Vasiliy Kulikov

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