linux-kernel - Re: [PATCH] ubi: avoid workqueue format string leak

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Message-ID: <20140408135729.GC2429@arch.cereza>
Date:	Tue, 8 Apr 2014 10:57:30 -0300
From:	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
To:	Kees Cook <keescook@...omium.org>
Cc:	Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ubi: avoid workqueue format string leak

Hello Kees,

Thanks for the patch.

On Apr 07, Kees Cook wrote:
> When building the name for the workqueue thread, make sure a format
> string cannot leak in from the disk name.
> 

Could you enlighten me and explain why you want to avoid the name leak?
Is it a security concern?

I'd like to understad this better, so I can avoid making such mistakes
in the future.

Thanks,
-- 
Ezequiel García, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
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