linux-kernel - Re: JIT emulator needs

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Message-ID: <46797747.9020904@zytor.com>
Date:	Wed, 20 Jun 2007 11:51:51 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Albert Cahalan <acahalan@...il.com>
CC:	William Lee Irwin III <wli@...omorphy.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: JIT emulator needs

Albert Cahalan wrote:
> Putting this into the security policy was an error born of
> lazyness to begin with. Abuse of the security mechanism
> was easier than hacking the toolchain, ELF loader, etc.
> 
> Either a binary needs self-modification, or it doesn't. This is
> determined by the author of the code. If you don't trust an
> executable that needs this ability, then you simply can not
> run it in a useful way.

That's fine.  That's a policy decision.  That's what a security policy
*is*.  The owner of the system has decided, by security policy, that
that is not allowed.  Bypassing that is not acceptable.

	-hpa
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