Re: CVS commit: src

[David Holland <dholland-tech%netbsd.org@localhost>]

On Wed, Aug 26, 2009 at 04:21:41PM -0400, Elad Efrat wrote:
 > > All recycled kernel memory, including stack frames, is considered
 > > security-sensitive and not supposed to be exposed to the world. (Given
 > > that you're working on the security system, you ought to know this.)
 > > It is a matter of proper copyout() usage.
 > 
 > If your world is userland only, as I presume by your mentioning of
 > copyout(), then it's rather obvious. I'm more interested in separation
 > between different kernel entities in the (far? :) future.

Entities that share the same memory space inherently have the same
trust level. At that point it becomes a nonissue, except for e.g.
cryptographic keys that should already be getting handled properly.

I'm not clear what you have in mind.

-- 
David A. Holland
dholland%netbsd.org@localhost