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To: linux-kernel@vger.kernel.org
Subject: kernel ring buffer accessible by users
From: Julien Oster <frodo@dereference.de>
Organization: FRODOID.ORG
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Date: Tue, 22 Apr 2003 18:21:16 +0200
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Hello,

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.

My question now is: Why? I often saw things in the kernel ring buffer
which I don't want every user to know (e.g. some telephone numbers with
ISDN).

Are there any problems in just letting root get the contents of the
kernel ring buffer?

Julien