netdev - Re: [PATCH net] ipv6: dccp: fix out of bound access in dccp_v6

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Message-Id: <20161103.162032.1632688241226729817.davem@davemloft.net>
Date:   Thu, 03 Nov 2016 16:20:32 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     eric.dumazet@...il.com
Cc:     netdev@...r.kernel.org, gerrit@....abdn.ac.uk, dccp@...r.kernel.org
Subject: Re: [PATCH net] ipv6: dccp: fix out of bound access in
 dccp_v6_err()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 02 Nov 2016 20:30:48 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> dccp_v6_err() does not use pskb_may_pull() and might access garbage.
> 
> We only need 4 bytes at the beginning of the DCCP header, like TCP,
> so the 8 bytes pulled in icmpv6_notify() are more than enough.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied and queue up for -stable.

Thanks Eric.