linux-kernel - Re: [PATCH net] macvtap: fix use after free for skb

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Date:	Thu, 11 Aug 2016 09:56:20 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jasowang@...hat.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	borntraeger@...ibm.com, cornelia.huck@...ibm.com, mst@...hat.com
Subject: Re: [PATCH net] macvtap: fix use after free for skb_array during
 release

From: Jason Wang <jasowang@...hat.com>
Date: Thu, 11 Aug 2016 18:15:56 +0800

> We've clean skb_array in macvtap_put_queue() but still try to pop from
> it during macvtap_sock_destruct(). Fix this use after free by moving
> the skb array cleanup to macvtap_sock_destruct() instead.
> 
> Fixes: 362899b8725b ("macvtap: switch to use skb array")
> Reported-by: Cornelia Huck <cornelia.huck@...ibm.com>
> Tested-by: Cornelia Huck <cornelia.huck@...ibm.com>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied, thanks for fixing this so quickly Jason.