netdev - Re: [PATCH net v4] sctp: asconf's process should verify address parameter is in the beginning

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Date:	Thu, 27 Aug 2015 14:00:00 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	lucien.xin@...il.com
Cc:	netdev@...r.kernel.org, mleitner@...hat.com, vyasevic@...hat.com
Subject: Re: [PATCH net v4] sctp: asconf's process should verify address
 parameter is in the beginning

From: Xin Long <lucien.xin@...il.com>
Date: Thu, 27 Aug 2015 16:26:34 +0800

> in sctp_process_asconf(), we get address parameter from the beginning of
> the addip params. but we never check if it's really there. if the addr
> param is not there, it still can pass sctp_verify_asconf(), then to be
> handled by sctp_process_asconf(), it will not be safe.
> 
> so add a code in sctp_verify_asconf() to check the address parameter is in
> the beginning, or return false to send abort.
> 
> note that this can also detect multiple address parameters, and reject it.
> 
> Signed-off-by: Xin Long <lucien.xin@...il.com>
> Signed-off-by: Marcelo Ricardo Leitner <mleitner@...hat.com>

Applied, thanks.
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