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-rw-r--r--include/linux/if_vlan.h7
-rw-r--r--net/core/dev.c2
2 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index d11f41d5269f..78a5a90b4267 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -663,7 +663,7 @@ static inline bool skb_vlan_tagged(const struct sk_buff *skb)
* Returns true if the skb is tagged with multiple vlan headers, regardless
* of whether it is hardware accelerated or not.
*/
-static inline bool skb_vlan_tagged_multi(const struct sk_buff *skb)
+static inline bool skb_vlan_tagged_multi(struct sk_buff *skb)
{
__be16 protocol = skb->protocol;
@@ -673,6 +673,9 @@ static inline bool skb_vlan_tagged_multi(const struct sk_buff *skb)
if (likely(!eth_type_vlan(protocol)))
return false;
+ if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
+ return false;
+
veh = (struct vlan_ethhdr *)skb->data;
protocol = veh->h_vlan_encapsulated_proto;
}
@@ -690,7 +693,7 @@ static inline bool skb_vlan_tagged_multi(const struct sk_buff *skb)
*
* Returns features without unsafe ones if the skb has multiple tags.
*/
-static inline netdev_features_t vlan_features_check(const struct sk_buff *skb,
+static inline netdev_features_t vlan_features_check(struct sk_buff *skb,
netdev_features_t features)
{
if (skb_vlan_tagged_multi(skb)) {
diff --git a/net/core/dev.c b/net/core/dev.c
index 969462ebb296..af0558b00c6c 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2969,7 +2969,7 @@ netdev_features_t passthru_features_check(struct sk_buff *skb,
}
EXPORT_SYMBOL(passthru_features_check);
-static netdev_features_t dflt_features_check(const struct sk_buff *skb,
+static netdev_features_t dflt_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features)
{