Commit ebfe92ca authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont Committed by David S. Miller
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Phonet: refuse to send bigger than MTU packets 



Signed-off-by: default avatarRémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent eb7c3adb

net/phonet/af_phonet.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -144,8 +144,8 @@ static int pn_send(struct sk_buff *skb, struct net_device *dev, 
	struct phonethdr *ph;

	struct phonethdr *ph;

	int err;

	int err;





	if (skb->len + 2 > 0xffff) {

	if (skb->len + 2 > 0xffff /* Phonet length field limit */ ||

		/* Phonet length field would overflow */

	    skb->len + sizeof(struct phonethdr) > dev->mtu) {

		err = -EMSGSIZE;

		err = -EMSGSIZE;

		goto drop;

		goto drop;

	}

	}