Re: Hardening debugfs (Was Re: [PATCH] debugfs: more tightlyrestrict default mount mode)

[Theodore Ts'o]

On Tue, Aug 28, 2012 at 07:55:58AM -0700, Ben Hutchings wrote:
> 
> The problems are apparently larger than specific modules:
> http://lists.linux-foundation.org/pipermail/ksummit-2012-discuss/2012-July/000894.html
> 

Sure, but most of those problems require root access, or physical
access to the hardware.  And a number of the "can oops the kernel"
assume module disappears out from under the open file descriptor, so
(a) that's a problem that can be fixed, and (b) if we can suppress a
random device driver from having its debugfs directory appear by
default, it certainly helps things.

					- Ted
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