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

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Message-Id: <20180622.071828.1940755549930973800.davem@davemloft.net>
Date:   Fri, 22 Jun 2018 07:18:28 +0900 (KST)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com, willemb@...gle.com
Subject: Re: [PATCH net] net/packet: fix use-after-free

From: Eric Dumazet <edumazet@...gle.com>
Date: Thu, 21 Jun 2018 14:16:02 -0700

> We should put copy_skb in receive_queue only after
> a successful call to virtio_net_hdr_from_skb().
> 
> syzbot report :
 ...
> Fixes: 58d19b19cd99 ("packet: vnet_hdr support for tpacket_rcv")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: syzbot <syzkaller@...glegroups.com>
> Cc: Willem de Bruijn <willemb@...gle.com>

Applied and queued up for -stable, thanks Eric.