CID 316513: Insecure data handling (TAINTED_SCALAR)

*** CID 316513:  Insecure data handling  (TAINTED_SCALAR)
/lib/dns/master.c: 2618 in load_raw()
2612     			 * the target available region be the same if
2613     			 * decompression is disabled (see dctx above) and we
2614     			 * are not downcasing names (options == 0).
2615     			 */
2616     			isc_buffer_init(&buf, isc_buffer_current(&target),
2617     					(unsigned int)rdlen);
>>>     CID 316513:  Insecure data handling  (TAINTED_SCALAR)
>>>     Passing tainted expression "target.active" to "dns_rdata_fromwire", which uses it as a loop boundary.
2618     			result = dns_rdata_fromwire(
2619     				&rdata[i], rdatalist.rdclass, rdatalist.type,
2620     				&target, &dctx, 0, &buf);
2621     			if (result != ISC_R_SUCCESS) {
2622     				goto cleanup;
2623     			}