linux-kernel - Re: [AppArmor 39/41] AppArmor: Profile loading and manipulation, pathname matching

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Message-ID: <20070416062708.GA14641@one.firstfloor.org>
Date:	Mon, 16 Apr 2007 08:27:08 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Andreas Gruenbacher <agruen@...e.de>
Cc:	Andi Kleen <andi@...stfloor.org>, jjohansen@...e.de,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, chrisw@...s-sol.org
Subject: Re: [AppArmor 39/41] AppArmor: Profile loading and manipulation, pathname matching

> It's nice to check for consistency though, so we're adding that. Profile 
> loading is a trusted operation, at least so far, and so security wise we 
> don't actually have to care --- if loading an invalid profile can bring down 
> the system, then that's no worse than an arbitrary module that crashes the 
> machine. Not sure if there will ever be user loadable profiles; at least at 
> that point we had to care.

A security system that allows to crash the kernel is a little weird 
though. It would be better to check. Not that a recursion check
is particularly expensive.

-Andi
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