linux-kernel - [PATCH] Add missing skb->dev assignment in Frame Relay RX code

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Date:	Sun, 29 Jun 2008 21:48:11 +0200
From:	Krzysztof Halasa <khc@...waw.pl>
To:	Jeff Garzik <jeff@...zik.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	<netdev@...r.kernel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] Add missing skb->dev assignment in Frame Relay RX code

Hi,

Commit 4c13eb6657fe9ef7b4dc8f1a405c902e9e5234e0 ([ETH]: Make
eth_type_trans set skb->dev like the other *_type_trans) removed
skb->dev assignment from hdlc_fr.c:fr_rx(). Unfortunately it was also
needed for cases other than eth_type_trans().

Adding it back.

It's quite serious and may be a security risk as it causes a wrong
input interface indication (the physical hdlcX instead of logical
pvcX). Probably -stable class fix.

Signed-off-by: Krzysztof Halasa <khc@...waw.pl>

diff --git a/drivers/net/wan/hdlc_fr.c b/drivers/net/wan/hdlc_fr.c
index c4ab032..3a86e64 100644
--- a/drivers/net/wan/hdlc_fr.c
+++ b/drivers/net/wan/hdlc_fr.c
@@ -1008,6 +1008,7 @@ static int fr_rx(struct sk_buff *skb)
 		stats->rx_bytes += skb->len;
 		if (pvc->state.becn)
 			stats->rx_compressed++;
+		skb->dev = dev;
 		netif_rx(skb);
 		return NET_RX_SUCCESS;
 	} else {
--
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