linux-kernel - Re: [PATCH] LSM: ModPin LSM for module loading restrictions

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Date:	Sat, 02 Nov 2013 12:39:14 -0700
From:	Casey Schaufler <casey@...aufler-ca.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	james.l.morris@...cle.com, jmorris@...ei.org, keescook@...omium.org
CC:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, rusty@...tcorp.com.au
Subject: Re: [PATCH] LSM: ModPin LSM for module loading restrictions

On 10/26/2013 6:51 AM, Tetsuo Handa wrote:
> Tetsuo Handa wrote:
>> I would send another one which uses only security_file_alloc/free .
> I sent it to James, Casey and Kees on "Fri, 18 Oct 2013 22:56:19 +0900" and
> waiting for your response. How long are we expected to remain vulnerable due to
> lack of multiple concurrent LSM support?

Having just spent a good chunk of the past year on the technical
issues, and having participated in the LSM development process since
its inception, I'd say there's at least a year before the dust settles.
Having a wad of code that works is one thing. Breaking it into chunks
that are both useful and small enough for the community to swallow is
another. Transforming a collection of clever hacks into an infrastructure
is a third. Once that's done we can deal with the naysayers.

Fortunately, we have a wad of code that works. Nobody seems to
think that taking that code as is is a great idea. Nobody has
this as their first priority, either. We're making progress, but
we know we need to be careful. I seriously doubt we'll get more
than one shot at it.

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