netdev - Re: [PATCH net] net: Reset secmark when scrubbing packet

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Message-ID: <1565845.goe1yP4tEB@t520.home>
Date:	Tue, 23 Dec 2014 17:28:56 -0200
From:	Flavio Leitner <fbl@...close.org>
To:	Thomas Graf <tgraf@...g.ch>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net] net: Reset secmark when scrubbing packet

On Tuesday, December 23, 2014 01:13:18 AM Thomas Graf wrote:
> 
> skb_scrub_packet() is called when a packet switches between a context
> such as between underlay and overlay, between namespaces, or between
> L3 subnets.
> 
> While we already scrub the packet mark, connection tracking entry,
> and cached destination, the security mark/context is left intact.
> 
> It seems wrong to inherit the security context of a packet when going
> from overlay to underlay or across forwarding paths.
> 
> Signed-off-by: Thomas Graf <tgraf@...g.ch>
> ---
> net/core/skbuff.c | 1 +
> 1 file changed, 1 insertion(+)

Acked-by: Flavio Leitner <fbl@...close.org>

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