linux-kernel - Re: [patch] remove MNT_NOEXEC check for PROT

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Date:	Sun, 24 Sep 2006 14:53:52 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Stas Sergeev <stsp@...et.ru>
Cc:	Hugh Dickins <hugh@...itas.com>, Andrew Morton <akpm@...l.org>,
	Ulrich Drepper <drepper@...hat.com>,
	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: [patch] remove MNT_NOEXEC check for PROT_EXEC mmaps

Ar Sul, 2006-09-24 am 10:55 +0400, ysgrifennodd Stas Sergeev:
> Before, people could use it and hope the binaries
> won't get executed (and if it was possible to execute
> them by invoking ld.so directly, then ld.so could have
> been fixed). Now the only possibility is to not use the
> "noexec" at all.
> So does that add to security or substract?..

If you want a tmpfs with noexec and a shared memory space with exec why
don't you just sort out mounting two different tmpfs instances ?

Alan

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