get_rpcap_pdu_len (packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
{
  return tvb_get_ntohl (tvb, offset + 4) + 8;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.