diff options
Diffstat (limited to 'net/ieee802154')
| -rw-r--r-- | net/ieee802154/6lowpan/rx.c | 8 |
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; |