check for capacity overflow

Author: jmillan

srtp/srtp.c

@@ -4910,6 +4910,12 @@ srtp_err_status_t srtp_stream_list_insert(srtp_stream_list_t list,
      */
     if (list->size == list->capacity) {
         size_t new_capacity = list->capacity + ((list->capacity + 1u) / 2u);
+
+        // check for capacity overflow.
+        if (new_capacity <= list->capacity) {
+            return srtp_err_status_alloc_fail;
+        }
+
         list_entry *new_entries =
             srtp_crypto_alloc(sizeof(list_entry) * new_capacity);
         if (new_entries == NULL) {