Language: Go
Label: vulnerable
CWE: CWE-400 \u2014 Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

Code:
func bitField(nd data.UnixFSData) (bitfield.Bitfield, error) {
	fanout := int(nd.FieldFanout().Must().Int())
	if fanout > maximumHamtWidth {
		return nil, fmt.Errorf("hamt witdh (%d) exceed maximum allowed (%d)", fanout, maximumHamtWidth)
	}
	bf := bitfield.NewBitfield(fanout)
	bf.SetBytes(nd.FieldData().Must().Bytes())
	return bf, nil
}