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

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Message-ID: <AANLkTinC9gy1nXXp5ZZ=nF7Nta-TNmoSOmZYtzS6FApy@mail.gmail.com>
Date:	Fri, 5 Nov 2010 08:11:49 +0800
From:	Eugene Teo <eugeneteo@...nel.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Marcus Meissner <meissner@...e.de>, security@...nel.org,
	mort@....com, fweisbec@...il.com, linux-kernel@...r.kernel.org,
	jason.wessel@...driver.com,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [Security] [PATCH] kernel: make /proc/kallsyms mode 400 to reduce
 ease of attacking

On Thu, Nov 4, 2010 at 6:11 PM, Tejun Heo <tj@...nel.org> wrote:
> 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>

Looks good to me too.

Acked-by: Eugene Teo <eugeneteo@...nel.org>

Eugene
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