bt: Fixed esp_spp_write() crash when len is 0
Closes
@@ -188,6 +188,11 @@ esp_err_t esp_spp_write(uint32_t handle, int len, uint8_t *p_data)
btc_spp_args_t arg;
ESP_BLUEDROID_STATUS_CHECK(ESP_BLUEDROID_STATUS_ENABLED);
+ if (len <= 0 || p_data == NULL) {
+ LOG_ERROR("Invalid data or len!\n");
+ return ESP_ERR_INVALID_ARG;
+ }
+
msg.sig = BTC_SIG_API_CALL;
msg.pid = BTC_PID_SPP;
msg.act = BTC_SPP_ACT_WRITE;
