From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263290AbTDVQcO (ORCPT ); Tue, 22 Apr 2003 12:32:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263296AbTDVQcO (ORCPT ); Tue, 22 Apr 2003 12:32:14 -0400 Received: from smtp014.mail.yahoo.com ([216.136.173.58]:51470 "HELO smtp014.mail.yahoo.com") by vger.kernel.org with SMTP id S263290AbTDVQcN (ORCPT ); Tue, 22 Apr 2003 12:32:13 -0400 From: Michael Buesch To: Julien Oster Subject: Re: kernel ring buffer accessible by users Date: Tue, 22 Apr 2003 18:44:05 +0200 User-Agent: KMail/1.5 References: In-Reply-To: Cc: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200304221844.05754.fsdeveloper@yahoo.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 22 April 2003 18:21, Julien Oster wrote: > 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 -- Regards Michael Buesch. http://www.8ung.at/tuxsoft $ cat /dev/zero > /dev/null /dev/null: That's *not* funny! :(