netdev - Re: [PATCH net 3/5] mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish

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Message-ID: <20240112193644.GE392144@kernel.org>
Date: Fri, 12 Jan 2024 19:36:44 +0000
From: Simon Horman <horms@...nel.org>
To: Eric Dumazet <edumazet@...gle.com>
Cc: "David S . Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Matthieu Baerts <matttbe@...nel.org>,
	Mat Martineau <martineau@...nel.org>,
	Geliang Tang <geliang.tang@...ux.dev>,
	Florian Westphal <fw@...len.de>, netdev@...r.kernel.org,
	eric.dumazet@...il.com,
	Peter Krystad <peter.krystad@...ux.intel.com>
Subject: Re: [PATCH net 3/5] mptcp: use OPTION_MPTCP_MPJ_SYNACK in
 subflow_finish_connect()

On Thu, Jan 11, 2024 at 07:49:15PM +0000, Eric Dumazet wrote:
> subflow_finish_connect() uses four fields (backup, join_id, thmac, none)
> that may contain garbage unless OPTION_MPTCP_MPJ_SYNACK has been set
> in mptcp_parse_option()
> 
> Fixes: f296234c98a8 ("mptcp: Add handling of incoming MP_JOIN requests")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Reviewed-by: Simon Horman <horms@...nel.org>