Fix an OOB bug in smp_proc_sec_req

Bug: 300903400
Test: m com.android.btservices
Ignore-AOSP-First: security
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f20a759c149b739f8dfc3790287ad1b954115c18)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a4704e7519d0a02c1caf8b4d8ed874bc201a4b91)
Merged-In: I400cfa3523c6d8b25c233205748c2db5dc803d1d
Change-Id: I400cfa3523c6d8b25c233205748c2db5dc803d1d

system/stack/smp/smp_act.cc

@@ -460,6 +460,13 @@ void smp_send_ltk_reply(tSMP_CB* p_cb, tSMP_INT_DATA* p_data) {
  * Description  process security request.
  ******************************************************************************/
 void smp_proc_sec_req(tSMP_CB* p_cb, tSMP_INT_DATA* p_data) {
+  if (smp_command_has_invalid_length(p_cb)) {
+    tSMP_INT_DATA smp_int_data;
+    smp_int_data.status = SMP_INVALID_PARAMETERS;
+    smp_sm_event(p_cb, SMP_AUTH_CMPL_EVT, &smp_int_data);
+    return;
+  }
+
   tBTM_LE_AUTH_REQ auth_req = *(tBTM_LE_AUTH_REQ*)p_data->p_data;
   tBTM_BLE_SEC_REQ_ACT sec_req_act;