diffsrc/http/modules/ngx_http_range_filter_module.c b/src/http/modules/ngx_http_range_filter_module.c

--- src/http/modules/ngx_http_range_filter_module.c

+++ src/http/modules/ngx_http_range_filter_module.c

@@ -377,6 +377,10 @@ ngx_http_range_parse(ngx_http_request_t 

             range->start = start;

             range->end = end;

+            if (size > NGX_MAX_OFF_T_VALUE - (end - start)) {

+                return NGX_HTTP_RANGE_NOT_SATISFIABLE;

+            }

+

             size += end - start;

             if (ranges-- == 0) {