Date: Sat, 8 Nov 2008 14:27:05 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: mathias.schnarrenberger@gmx.de
Cc: linux-kernel@vger.kernel.org
Subject: Re: security: delete BIOS password in keyboard buffer during kernel
 bootup
Message-ID: <20081108142705.59c1ced7@lxorguk.ukuu.org.uk>
In-Reply-To: <200811081100.03966.mathias.schnarrenberger@gmx.de>
References: <200811081100.03966.mathias.schnarrenberger@gmx.de>
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> So, I think it would be good if the kernel clears the keyboard buffer during boot up (at least in x86-based systems) to protect the users password. I don't know anything about EFI-based systems and other architectures.
> Because I'm not sure where to implement the code to delete the keyboard buffer in the kernel, I can't make a proper patch. Possibly one of you can do this ;)

Clear it with a program if it bothers you. You've written 90% of the
needed code with the program below.


Alan
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