    this.stderr._read = function(n) {
      if (self._waitChanDrain) {
        self._waitChanDrain = false;
        if (incoming.window <= WINDOW_THRESHOLD)
          windowAdjust(self);
      }
    };
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.