diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index a9fdfe401f5b..108c2f290ac5 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -4117,7 +4117,7 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk
 		skb_pull(skb, 2);
 		len = skb->len;
 
-		if (__is_sar_start(control))
+		if (__is_sar_start(control) && __is_iframe(control))
 			len -= 2;
 
 		if (pi->fcs == L2CAP_FCS_CRC16)