linux-kernel - Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking

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Message-ID: <4CD286E4.8070802@kernel.org>
Date:	Thu, 04 Nov 2010 11:11:48 +0100
From:	Tejun Heo <tj@...nel.org>
To:	Marcus Meissner <meissner@...e.de>
CC:	linux-kernel@...r.kernel.org, jason.wessel@...driver.com,
	fweisbec@...il.com, mort@....com, akpm@...l.org,
	security@...nel.org
Subject: Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of
 attacking

On 11/04/2010 11:09 AM, Marcus Meissner wrote:
> Making /proc/kallsyms readable only for root makes it harder
> for attackers to write generic kernel exploits by removing
> one source of knowledge where things are in the kernel.
> 
> Signed-off-by: Marcus Meissner <meissner@...e.de>

I can't recall needing /proc/kallsyms when I wasn't root, so unless
there's a compelling use case.

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun
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