Messages in this thread | | | Date | Sun, 23 Oct 2011 16:21:59 +1100 | From | Kevin Easton <> | Subject | Re: [PATCH 1/2] LSM: Do not apply mmap_min_addr check to PROT_NONE mappings |
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Quoting Linus Torvalds <torvalds@linux-foundation.org>:
> [ Resent, this seems to have gotten dropped by something. Sorry if it > shows up twice ]
My fault, looks like lkml.org trims the CC list to an unreasonably small value.
> On Sun, Oct 23, 2011 at 2:08 AM, Kevin Easton <kevin@guarana.org> wrote: >> >> Won't this still allow silent probing, because the malicious user can >> just try to create the mapping, then check in /proc/self/maps to see >> if it really worked? > > Yup, right you are. > > So we shouldn't do that either, and probably just leave the current > semantics, unless Roland (or others) can convince me that complicating > the kernel mmap security model really is worth it. > > Linus
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