linux-kernel - Re: [PATCH 13/13] android: ram_console: honor dmesg

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Date:	Wed, 7 Mar 2012 14:10:41 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Nick Kralevich <nnk@...gle.com>,
	Android Kernel Team <kernel-team@...roid.com>
Subject: Re: [PATCH 13/13] android: ram_console: honor dmesg_restrict

On Wed, Mar 07, 2012 at 01:58:23PM -0800, John Stultz wrote:
> From: Nick Kralevich <nnk@...gle.com>
> 
> The Linux kernel has a setting called dmesg_restrict. When true,
> only processes with CAP_SYSLOG can view the kernel dmesg logs. This
> helps prevent leaking of kernel information into user space.
> 
> On Android, it's possible to bypass these restrictions by viewing
> /proc/last_kmsg.
> 
> This change makes /proc/last_kmsg require the same permissions as
> dmesg.
> 
> Bug: 5555691

In what bugzilla does this bug number reference?  Random integers don't
do much for people when looking back at the history of things :)

thanks,

greg k-h
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