netdev - Re: can-bcm: fix minor heap overflow

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Date:	Thu, 11 Nov 2010 21:43:58 -0500
From:	Dan Rosenberg <drosenberg@...curity.com>
To:	Simon Horman <horms@...ge.net.au>
Cc:	Oliver Hartkopp <socketcan@...tkopp.net>,
	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Urs Thuermann <urs@...ogud.escape.de>, security@...nel.org
Subject: Re: can-bcm: fix minor heap overflow


> 
> If the string may be up to 17 bytes long why are you allocating 20?
> 

In Oliver's defense, this doesn't matter even a little bit.  The
structure will be allocated with kmalloc-1024 either way.

-Dan

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