netdev - Re: [PATCH net] openvswitch: packet messages need their own probe attribtue

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Message-Id: <20150114.164958.940077874025223530.davem@davemloft.net>
Date:	Wed, 14 Jan 2015 16:49:58 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	tgraf@...g.ch
Cc:	fw@...len.de, linux@...elenboom.it, pshelar@...ira.com,
	netdev@...r.kernel.org, dev@...nvswitch.org, jrajahalme@...ira.com
Subject: Re: [PATCH net] openvswitch: packet messages need their own probe
 attribtue

From: Thomas Graf <tgraf@...g.ch>
Date: Wed, 14 Jan 2015 13:56:19 +0000

> User space is currently sending a OVS_FLOW_ATTR_PROBE for both flow
> and packet messages. This leads to an out-of-bounds access in
> ovs_packet_cmd_execute() because OVS_FLOW_ATTR_PROBE >
> OVS_PACKET_ATTR_MAX.
> 
> Introduce a new OVS_PACKET_ATTR_PROBE with the same numeric value
> as OVS_FLOW_ATTR_PROBE to grow the range of accepted packet attributes
> while maintaining to be binary compatible with existing OVS binaries.
> 
> Fixes: 05da589 ("openvswitch: Add support for OVS_FLOW_ATTR_PROBE.")
> Reported-by: Sander Eikelenboom <linux@...elenboom.it>
> Tracked-down-by: Florian Westphal <fw@...len.de>
> Signed-off-by: Thomas Graf <tgraf@...g.ch>

Applied, thanks.
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