netdev - Re: [PATCH] IPv6: fix CoA check in RH2 input handler (mip6_rthdr

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Date:	Sun, 18 Jul 2010 15:05:03 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	arno@...isbad.org
Cc:	yoshfuji@...ux-ipv6.org, netdev@...r.kernel.org
Subject: Re: [PATCH] IPv6: fix CoA check in RH2 input handler
 (mip6_rthdr_input())

From: arno@...isbad.org (Arnaud Ebalard)
Date: Fri, 16 Jul 2010 12:38:44 +0200

> The input handler for Type 2 Routing Header (mip6_rthdr_input())
> checks if the CoA in the packet matches the CoA in the XFRM state.
> 
> Current check is buggy: it compares the adddress in the Type 2
> Routing Header, i.e. the HoA, against the expected CoA in the state.
> The comparison should be made against the address in the destination
> field of the IPv6 header.
> 
> The bug remained unnoticed because the main (and possibly only current)
> user of the code (UMIP MIPv6 Daemon) initializes the XFRM state with the
> unspecified address, i.e. explicitly allows everything.
> 
> Yoshifuji-san, can you ack that one?
> 
> Signed-off-by: Arnaud Ebalard <arno@...isbad.org>

I've reviewed this and it definitely looks correct to me.

Applied, thanks Arnaud.
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