linux-kernel - Re: seccomp and ptrace. what is the correct order?

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Date:	Mon, 21 May 2012 11:25:04 -0700
From:	Roland McGrath <mcgrathr@...gle.com>
To:	Eric Paris <netdev@...isplace.org>
Cc:	Will Drewry <wad@...omium.org>, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	kernel-hardening@...ts.openwall.com, hpa@...or.com,
	mingo@...hat.com, oleg@...hat.com, peterz@...radead.org,
	rdunlap@...otime.net, tglx@...utronix.de, luto@....edu,
	eparis@...hat.com, serge.hallyn@...onical.com, indan@....nu,
	pmoore@...hat.com, akpm@...ux-foundation.org, corbet@....net,
	eric.dumazet@...il.com, markus@...omium.org,
	coreyb@...ux.vnet.ibm.com, keescook@...omium.org
Subject: Re: seccomp and ptrace. what is the correct order?

>From a security perspective I think the natural expectation would be that
the seccomp check is on the values that will actually be used, without an
intervening opportunity to change anything.
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