From 361d83c388f0510fcfa189dd1a313014899ce28f Mon Sep 17 00:00:00 2001
From: freddie <freddie.yang@139.com>
Date: Sun, 15 Dec 2019 04:37:44 +0800
Subject: [PATCH] nimble/host: Fix NULL pointer passed as a parameter

---
 nimble/host/src/ble_hs_hci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nimble/host/src/ble_hs_hci.c b/nimble/host/src/ble_hs_hci.c
index 2062eb96d0..1376b84c17 100644
--- a/nimble/host/src/ble_hs_hci.c
+++ b/nimble/host/src/ble_hs_hci.c
@@ -228,7 +228,7 @@ ble_hs_hci_process_ack(uint16_t expected_opcode,
     }
 
     if (rc == 0) {
-        if (params_buf == NULL) {
+        if (params_buf == NULL || out_ack->bha_params == NULL) {
             out_ack->bha_params_len = 0;
         } else {
             if (out_ack->bha_params_len > params_buf_len) {