1 files changed, 4 insertions, 0 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 4415eb48c6ae..c2fb26d9286c 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -1430,6 +1430,8 @@ static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq)
         tx_skb = skb_clone(skb, GFP_ATOMIC);
         bt_cb(skb)->retries++;
         control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+        control &= L2CAP_CTRL_SAR;
+
         control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
                         | (tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
         put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
@@ -1465,6 +1467,8 @@ static int l2cap_ertm_send(struct sock *sk)
                 bt_cb(skb)->retries++;
 
                 control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+                control &= L2CAP_CTRL_SAR;
+
                 if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
                         control |= L2CAP_CTRL_FINAL;
                         pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;