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Date: Tue, 22 Apr 2003 18:54:34 +0200
From: Julien Oster <frodoid@frodoid.org>
To: Michael Buesch <fsdeveloper@yahoo.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernel ring buffer accessible by users
Message-ID: <20030422165434.GA363@ggom.de>
References: <frodoid.frodo.87wuhmh5ab.fsf@usenet.frodoid.org> <200304221844.05754.fsdeveloper@yahoo.de>
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On Tue, Apr 22, 2003 at 06:44:05PM +0200, Michael Buesch wrote:

Hello Michael,

> > it's been quite a while that I noticed that any ordinary user, not
> > just root, can type "dmesg" to see the kernel ring buffer.

> just make
> $ chmod 700 /bin/dmesg

Thanks for the answer, but that doesn't help that much, since any user
could copy dmesg from his system or simply code a dmesg replacement
within a few minutes.

Regards,
Julien