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vxlan: fix potential NULL dereference in arp_reduce()

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This patch fixes a NULL pointer dereference in the event of an
skb allocation failure in arp_reduce().

Signed-Off-By: David L Stevens <dlstevens@us.ibm.com>
Acked-by: Cong Wang <cwang@twopensource.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Stevens 2014-03-18 12:32:29 -04:00 committed by David S. Miller
parent 0df04c4ccc
commit 7346135dcd
1 changed files with 3 additions and 0 deletions
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3
drivers/net/vxlan.c
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@ -1318,6 +1318,9 @@ static int arp_reduce(struct net_device *dev, struct sk_buff *skb)
neigh_release(n);
if (reply == NULL)
goto out;
skb_reset_mac_header(reply);
__skb_pull(reply, skb_network_offset(reply));
reply->ip_summed = CHECKSUM_UNNECESSARY;