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-rw-r--r--net/ieee802154/6lowpan/rx.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index 45ce121369c2..f7eb091203a8 100644
--- a/net/ieee802154/6lowpan/rx.c
+++ b/net/ieee802154/6lowpan/rx.c
@@ -11,6 +11,7 @@
#include <linux/if_arp.h>
#include <net/6lowpan.h>
+#include <net/mac802154.h>
#include <net/ieee802154_netdev.h>
#include "6lowpan_i.h"
@@ -280,6 +281,13 @@ static inline bool lowpan_is_reserved(u8 dispatch)
*/
static inline bool lowpan_rx_h_check(struct sk_buff *skb)
{
+ __le16 fc = ieee802154_get_fc_from_skb(skb);
+
+ /* check on ieee802154 conform 6LoWPAN header */
+ if (!ieee802154_is_data(fc) ||
+ !ieee802154_is_intra_pan(fc))
+ return false;
+
/* check if we can dereference the dispatch */
if (unlikely(!skb->len))
return false;