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Message-ID: <CAObL_7EE+jkpTR9Yu3GwpLBt-X-MPXX=oR4rf1duiHBUu_gjyA@mail.gmail.com>
Date: Mon, 21 May 2012 11:40:29 -0700
From: Andrew Lutomirski <luto@....edu>
To: Roland McGrath <mcgrathr@...gle.com>
Cc: keescook@...omium.org, serge.hallyn@...onical.com,
Will Drewry <wad@...omium.org>, indan@....nu, Eric Paris <netdev@...isplace.org>, hpa@...or.com,
rdunlap@...otime.net, linux-security-module@...r.kernel.org,
kernel-hardening@...ts.openwall.com, markus@...omium.org, mingo@...hat.com,
eric.dumazet@...il.com, tglx@...utronix.de, pmoore@...hat.com,
peterz@...radead.org, oleg@...hat.com, coreyb@...ux.vnet.ibm.com,
corbet@....net, linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
eparis@...hat.com
Subject: Re: seccomp and ptrace. what is the correct order?
On May 21, 2012 8:25 PM, "Roland McGrath" <mcgrathr@...gle.com> wrote:
>
> 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.
Certainly if the seccomp sandbox allows ptrace, this is important.
[Apologies if the Android app uses some evil mime type here.]
--Andy
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