From: Nix <nix@esperi.org.uk>
To: Emmanuel Fleury <emmanuel.fleury@labri.fr>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [ASLR] Better control on Randomization
Date: Mon, 30 Jan 2006 22:38:10 +0000 [thread overview]
Message-ID: <87d5i9qr3h.fsf@amaterasu.srvr.nix> (raw)
In-Reply-To: <43DE710F.9020408@labri.fr> (Emmanuel Fleury's message of "30 Jan 2006 20:05:19 -0000")
On 30 Jan 2006, Emmanuel Fleury prattled cheerily:
> Would it be possible to tweak them independently from each other ?
> (still via procfs)
If you prelink your system, shared library randomization (of those
libraries that were prelinked) ceases: but the stack is still
randomized. If you prelink with -R, prelink uses random addresses,
which is pretty much as good as using ASLR, but faster and more
memory-efficient :)
I don't know of any specific knob, nor of a way to turn off stack
randomization but leave mmap(PROT_EXEC) randomization on.
--
`I won't make a secret of the fact that your statement/question
sent a wave of shock and horror through us.' --- David Anderson
next prev parent reply other threads:[~2006-01-30 22:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-30 20:03 Emmanuel Fleury
2006-01-30 22:38 ` Nix [this message]
2006-01-31 9:15 ` Emmanuel Fleury
2006-01-31 13:14 ` Emmanuel Fleury
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