From: Tejun Heo <tj@kernel.org>
To: Marcus Meissner <meissner@suse.de>
Cc: linux-kernel@vger.kernel.org, jason.wessel@windriver.com,
fweisbec@gmail.com, mort@sgi.com, akpm@osdl.org,
security@kernel.org
Subject: Re: [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking
Date: Thu, 04 Nov 2010 11:11:48 +0100 [thread overview]
Message-ID: <4CD286E4.8070802@kernel.org> (raw)
In-Reply-To: <20101104100914.GC25118@suse.de>
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@suse.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@kernel.org>
Thanks.
--
tejun
next prev parent reply other threads:[~2010-11-04 10:12 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-04 10:09 [PATCH] kernel: make /proc/kallsyms mode 400 to reduce ease of attacking Marcus Meissner
2010-11-04 10:11 ` Tejun Heo [this message]
2010-11-05 0:11 ` [Security] " Eugene Teo
2010-11-04 11:46 ` Ingo Molnar
2010-11-04 12:29 ` Marcus Meissner
2010-11-04 13:58 ` Ingo Molnar
2010-11-04 14:11 ` Ingo Molnar
2010-11-04 14:33 ` Marcus Meissner
2010-11-04 14:38 ` Tejun Heo
2010-11-04 14:43 ` H. Peter Anvin
2010-11-04 14:48 ` Tejun Heo
2010-11-04 19:08 ` Ingo Molnar
2010-11-04 21:29 ` [Security] " Willy Tarreau
2010-11-04 21:51 ` Ingo Molnar
2010-11-04 22:35 ` Willy Tarreau
2010-11-04 23:46 ` Willy Tarreau
2010-11-07 8:50 ` Ingo Molnar
2010-11-07 9:08 ` Ingo Molnar
2010-11-07 9:49 ` Willy Tarreau
2010-11-07 11:27 ` Ingo Molnar
2010-11-07 11:41 ` Willy Tarreau
2010-11-07 11:47 ` Ingo Molnar
2010-11-07 11:56 ` Willy Tarreau
2010-11-07 12:12 ` Ingo Molnar
2010-11-07 12:22 ` Willy Tarreau
2010-11-07 12:25 ` Ingo Molnar
2010-11-07 12:39 ` Willy Tarreau
2010-11-07 12:32 ` Ingo Molnar
2010-11-07 12:51 ` Willy Tarreau
2010-11-07 15:27 ` Alan Cox
2010-11-08 6:29 ` Ingo Molnar
2010-11-07 11:42 ` Ingo Molnar
2010-11-07 11:51 ` Willy Tarreau
2010-11-07 12:37 ` Ingo Molnar
2010-11-07 12:55 ` Willy Tarreau
2010-11-07 8:56 ` Ingo Molnar
2010-11-07 9:03 ` Ingo Molnar
[not found] ` <20101104215157.GA25128@ <20101107090805.GA27983@elte.hu>
2010-11-13 13:06 ` Gilles Espinasse
2010-11-07 18:02 ` Andi Kleen
2010-11-07 18:32 ` H. Peter Anvin
2010-11-10 8:53 ` Ingo Molnar
2010-11-11 2:51 ` H. Peter Anvin
2010-11-11 7:05 ` Ingo Molnar
2010-11-05 2:38 ` Frank Rowand
2010-11-10 20:58 ` Jesper Juhl
2010-11-05 0:20 ` Jesper Juhl
-- strict thread matches above, loose matches on Subject: below --
2010-11-16 10:46 Marcus Meissner
2010-11-17 5:07 ` Kyle McMartin
2010-11-18 7:48 ` Ingo Molnar
2010-11-20 3:18 ` Kees Cook
2010-11-26 7:51 ` Ingo Molnar
2010-11-17 5:40 ` Kyle Moffett
2010-11-17 5:41 ` Kyle Moffett
2010-11-17 5:58 ` Linus Torvalds
2010-11-17 6:19 ` Willy Tarreau
2010-11-18 7:31 ` Ingo Molnar
2010-11-23 17:24 ` Pavel Machek
2010-11-26 7:38 ` Ingo Molnar
2010-11-29 19:03 ` H. Peter Anvin
2010-11-20 11:32 ` Avi Kivity
2010-11-19 19:19 ` Sarah Sharp
2010-11-19 19:54 ` Linus Torvalds
2010-11-19 19:58 ` david
2010-11-19 20:04 ` Linus Torvalds
2010-11-19 20:16 ` Willy Tarreau
2010-11-19 20:55 ` david
2010-11-26 7:48 ` Ingo Molnar
2010-11-29 16:33 ` Sarah Sharp
2010-11-29 18:04 ` Ingo Molnar
2010-11-29 19:05 ` H. Peter Anvin
2010-11-29 19:21 ` Eric Paris
2010-11-29 19:38 ` H. Peter Anvin
2010-11-29 21:49 ` Willy Tarreau
2010-11-29 23:31 ` Alan Cox
2010-11-30 11:58 ` Ingo Molnar
2010-11-20 11:05 ` Richard W.M. Jones
2010-11-19 21:12 Andy Walls
2010-11-19 23:22 ` Linus Torvalds
2010-11-20 2:40 ` Kees Cook
2010-11-20 19:47 ` Henrique de Moraes Holschuh
2010-11-29 22:58 ` Kevin Easton
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