Commit 22244099 authored by Julian Wiedmann's avatar Julian Wiedmann Committed by David S. Miller

net/af_iucv: drop inbound packets with invalid flags

Inbound packets may have any combination of flag bits set in their iucv
header. If we don't know how to handle a specific combination, drop the
skb instead of leaking it.

To clarify what error is returned in this case, replace the hard-coded
0 with the corresponding macro.
Signed-off-by: default avatarJulian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ee28bb56
......@@ -2155,8 +2155,8 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
struct sock *sk;
struct iucv_sock *iucv;
struct af_iucv_trans_hdr *trans_hdr;
int err = NET_RX_SUCCESS;
char nullstring[8];
int err = 0;
if (skb->len < (ETH_HLEN + sizeof(struct af_iucv_trans_hdr))) {
WARN_ONCE(1, "AF_IUCV too short skb, len=%d, min=%d",
......@@ -2254,7 +2254,7 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
err = afiucv_hs_callback_rx(sk, skb);
break;
default:
;
kfree_skb(skb);
}
return err;
......
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