Messages in this thread | | | Date | Tue, 3 Aug 2010 10:07:49 -0700 | From | Kees Cook <> | Subject | Re: Preview of changes to the Security susbystem for 2.6.36 |
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On Mon, Aug 02, 2010 at 07:33:26PM +0200, Christian Stroetmann wrote: > structure of the other LSMs, especially if it becomes large and in > this way important to be followed by only growing it with > functionalities taken from other security packages. If you say that > the way of the Yama LSM is the right way to do it in general, then > we don't need a new LSM like Yama, but a new LSM architecture.
Well, trying to get these protections into mainline does seem to be demonstrating a need for some kind of security architecture that isn't LSM.
As for chaining, I was considering introducing basic "first non-zero return code wins" chain of LSMs, but the chain could include only up to 1 LSM that implements the proc attr hook (though the prctl handler isn't non-zero but rather non-ENOSYS).
-Kees
-- Kees Cook Ubuntu Security Team
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