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| author | David Stevens <dlstevens@us.ibm.com> | 2014-03-18 12:32:29 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-14 06:42:17 -0700 |
| commit | c3c4a8c1e19205057f680ab3d73044462bd5303c (patch) | |
| tree | 8b389cb15e06ab099dcbea3e3bf410d75daec9e6 | |
| parent | 8e5612a299431024c3b8c136ba4cb7c523dec934 (diff) | |
| download | lwn-c3c4a8c1e19205057f680ab3d73044462bd5303c.tar.gz lwn-c3c4a8c1e19205057f680ab3d73044462bd5303c.zip | |
vxlan: fix potential NULL dereference in arp_reduce()
[ 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/vxlan.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 054489fdf54a..9673edfff451 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -845,6 +845,9 @@ 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; |