NimBLE: host_rcv_pkt event buf size check.
Check if the size of HCI event buffer is greater than the received HCI
packet. If not then abort with the error message.
@@ -342,6 +342,13 @@ static int host_rcv_pkt(uint8_t *data, uint16_t len)
totlen = BLE_HCI_EVENT_HDR_LEN + data[2];
assert(totlen <= UINT8_MAX + BLE_HCI_EVENT_HDR_LEN);
+ if (totlen > MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE)) {
+ ESP_LOGE(TAG, "Received HCI data length at host (%d) exceeds maximum configured HCI event buffer size (%d).",
+ totlen, MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE));
+ ble_hs_sched_reset(BLE_HS_ECONTROLLER);
+ return 0;
+ }
+
if (data[1] == BLE_HCI_EVCODE_HW_ERROR) {
assert(0);
}
