1 files changed, 6 insertions, 2 deletions

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 0710379491bf..8a136b6a1ff0 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -408,11 +408,17 @@ void batadv_interface_rx(struct net_device *soft_iface,
          */
         nf_reset(skb);
 
+        if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
+                goto dropped;
+
         vid = batadv_get_vid(skb, 0);
         ethhdr = eth_hdr(skb);
 
         switch (ntohs(ethhdr->h_proto)) {
         case ETH_P_8021Q:
+                if (!pskb_may_pull(skb, VLAN_ETH_HLEN))
+                        goto dropped;
+
                 vhdr = (struct vlan_ethhdr *)skb->data;
 
                 if (vhdr->h_vlan_encapsulated_proto != ethertype)
@@ -424,8 +430,6 @@ void batadv_interface_rx(struct net_device *soft_iface,
         }
 
         /* skb->dev & skb->pkt_type are set here */
-        if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
-                goto dropped;
         skb->protocol = eth_type_trans(skb, soft_iface);
 
         /* should not be necessary anymore as we use skb_pull_rcsum()