linux-kernel - Re: [PATCH net V2] tuntap: correctly handle error in tun_set

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Date:	Thu, 12 Sep 2013 17:22:41 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	mst@...hat.com
Cc:	jasowang@...hat.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, wannes.rombouts@...tech.eu
Subject: Re: [PATCH net V2] tuntap: correctly handle error in tun_set_iff()

From: "Michael S. Tsirkin" <mst@...hat.com>
Date: Wed, 11 Sep 2013 13:43:50 +0300

> On Wed, Sep 11, 2013 at 06:09:48PM +0800, Jason Wang wrote:
>> Commit c8d68e6be1c3b242f1c598595830890b65cea64a
>> (tuntap: multiqueue support) only call free_netdev() on error in
>> tun_set_iff(). This causes several issues:
>> 
>> - memory of tun security were leaked
>> - use after free since the flow gc timer was not deleted and the tfile
>>   were not detached
>> 
>> This patch solves the above issues.
>> 
>> Reported-by: Wannes Rombouts <wannes.rombouts@...tech.eu>
>> Cc: Michael S. Tsirkin <mst@...hat.com>
>> Signed-off-by: Jason Wang <jasowang@...hat.com>
> 
> Acked-by: Michael S. Tsirkin <mst@...hat.com>

Applied and queued up for -stable, thanks.
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