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authorJulian Wiedmann <jwi@linux.ibm.com>2018-09-05 17:55:10 +0300
committerDavid S. Miller <davem@davemloft.net>2018-09-06 08:32:21 +0300
commit222440996d6daf635bed6cb35041be22ede3e8a0 (patch)
tree5ed476604db578b0c0d1f0bdc2bfc7cd154f7aff /net/iucv
parentee28bb56ac5b4c0c08ef10d33cc7adb749bbf4c6 (diff)
downloadlinux-222440996d6daf635bed6cb35041be22ede3e8a0.tar.xz
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: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/iucv')
-rw-r--r--net/iucv/af_iucv.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index a21d8ed0a325..01000c14417f 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -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;