Re: Really good idea to allow mmap(0, FIXED)?

David Wagner wrote:

Is this right?  Have I correctly understood the issue?


More or less, though a simpler example would be something like:

   if (thing->uid == 0)
       do_magic();

and if "thing" happens to be in userspace (NULL or otherwise) then theuser can control this test. So the answer is that the kernel shouldn'tbe looking at uninitialized pointers.


   J
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References:
- Really good idea to allow mmap(0, FIXED)?
  - From: Michael Buesch <[email protected]>
- Re: Really good idea to allow mmap(0, FIXED)?
  - From: [email protected] (David Wagner)

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