Commit a068833b authored Apr 20, 2015 by Joakim Tjernlund Committed by David S. Miller Apr 20, 2015

pppoe: Lacks DST MAC address check



A pppoe session is identified by its session ID and MAC address.
Currently pppoe does not check if the received pkg has the correct
MAC address. This is a problem when the eth I/F is in promisc mode
as then any DST MAC address is accepted.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 2ab95749

drivers/net/ppp/pppoe.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -380,6 +380,9 @@ static int pppoe_rcv_core(struct sock sk, struct sk_buff skb)
		* can't change.
		*/

		if (skb->pkt_type == PACKET_OTHERHOST)
		goto abort_kfree;

		if (sk->sk_state & PPPOX_BOUND) {
		ppp_input(&po->chan, skb);
		} else if (sk->sk_state & PPPOX_RELAY) {