netdev - Re: [PATCH] packet: fix potential use after free

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Date:	Thu, 10 Apr 2014 10:19:21 +0200
From:	Daniel Borkmann <dborkman@...hat.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>, Xi Wang <xii@...gle.com>
Subject: Re: [PATCH] packet: fix potential use after free

On 04/10/2014 03:22 AM, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@...gle.com>
>
> As soon skb is queued into sk_receive_queue, it can be consumed,
> so its racy to access skb->len.
>
> Given that sk_data_ready() / sock_def_readable() don't really care, just
> use 0 instead of skb->len
>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Xi Wang <xii@...gle.com>

Acked-by: Daniel Borkmann <dborkman@...hat.com>

Seems to be there since pre 2005 ...
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