1 files changed, 4 insertions, 2 deletions

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 8c225ef349cd..2ac8d50861e0 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -32,6 +32,8 @@
 
 #define SMP_TIMEOUT     msecs_to_jiffies(30000)
 
+#define AUTH_REQ_MASK   0x07
+
 static inline void swap128(u8 src[16], u8 dst[16])
 {
         int i;
@@ -230,7 +232,7 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
                 req->max_key_size = SMP_MAX_ENC_KEY_SIZE;
                 req->init_key_dist = 0;
                 req->resp_key_dist = dist_keys;
-                req->auth_req = authreq;
+                req->auth_req = (authreq & AUTH_REQ_MASK);
                 return;
         }
 
@@ -239,7 +241,7 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
         rsp->max_key_size = SMP_MAX_ENC_KEY_SIZE;
         rsp->init_key_dist = 0;
         rsp->resp_key_dist = req->resp_key_dist & dist_keys;
-        rsp->auth_req = authreq;
+        rsp->auth_req = (authreq & AUTH_REQ_MASK);
 }
 
 static u8 check_enc_key_size(struct l2cap_conn *conn, __u8 max_key_size)