| From | Jiri Slaby <> | Subject | [PATCH 3.12 47/72] vxlan: fix potential NULL dereference in arp_reduce() | Date | Fri, 18 Apr 2014 11:22:20 +0200 |
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From: David Stevens <dlstevens@us.ibm.com>
3.12-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 7346135dcd3f9b57f30a5512094848c678d7143e ]
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> Signed-off-by: Jiri Slaby <jslaby@suse.cz> --- drivers/net/vxlan.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 32c45c3d820d..020fe03f37c0 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1212,6 +1212,9 @@ 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; -- 1.9.2
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