Commit b8c15839 authored by Guillaume Nault's avatar Guillaume Nault Committed by David S. Miller

pppoe: only process PADT targeted at local interfaces

We don't want to disconnect a session because of a stray PADT arriving
while the interface is in promiscuous mode.
Furthermore, multicast and broadcast packets make no sense here, so
only PACKET_HOST is accepted.
Reported-by: default avatarDavid Balažic <xerces9@gmail.com>
Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: default avatarGuillaume Nault <gnault@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fd4a5177
...@@ -490,6 +490,9 @@ static int pppoe_disc_rcv(struct sk_buff *skb, struct net_device *dev, ...@@ -490,6 +490,9 @@ static int pppoe_disc_rcv(struct sk_buff *skb, struct net_device *dev,
if (!skb) if (!skb)
goto out; goto out;
if (skb->pkt_type != PACKET_HOST)
goto abort;
if (!pskb_may_pull(skb, sizeof(struct pppoe_hdr))) if (!pskb_may_pull(skb, sizeof(struct pppoe_hdr)))
goto abort; goto abort;
......
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