diff --git a/stack/smp/smp_act.cc b/stack/smp/smp_act.cc
index be340ec..fe21398 100644
--- a/stack/smp/smp_act.cc
+++ b/stack/smp/smp_act.cc
@@ -929,6 +929,14 @@
   tBTM_LE_PENC_KEYS le_key;
 
   SMP_TRACE_DEBUG("%s", __func__);
+
+  if (p_cb->rcvd_cmd_len < 11) {  // 1(Code) + 2(EDIV) + 8(Rand)
+    android_errorWriteLog(0x534e4554, "111937027");
+    SMP_TRACE_ERROR("%s: Invalid command length: %d, should be at least 11",
+                    __func__, p_cb->rcvd_cmd_len);
+    return;
+  }
+
   smp_update_key_mask(p_cb, SMP_SEC_KEY_TYPE_ENC, true);
 
   STREAM_TO_UINT16(le_key.ediv, p);