linux-kernel - Re: [PATCH] Restrict unprivileged access to kernel syslog

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Date:	Tue, 09 Nov 2010 07:11:12 -0500
From:	Dan Rosenberg <drosenberg@...curity.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, security@...nel.org,
	stable@...nel.org, Andrew Morton <akpm@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [PATCH] Restrict unprivileged access to kernel syslog


> 
> The initialization to zero is implicit, no need to write it out.
> 

I'll resend after the first round of comments.

> Also, it would also be useful to have a CONFIG_SECURITY_RESTRICT_DMESG=y option 
> introduced by your patch as well, which flag allows a distro or user to disable 
> unprivileged syslog reading via the kernel config.

Are you suggesting having the existence of the sysctl depend on
CONFIG_SECURITY_RESTRICT_DMESG, or having a choice between a sysctl
(when config is disabled) and having restrictions always on (when config
is enabled)?

-Dan

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