fix: index out of bounds error

Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18177 Credit to oss-fuzz
Pro · Oct 14, 2019 · f7f0dd5 · f7f0dd5
1 parent 0f504ef
commit f7f0dd5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/libmdnsd/1035.c b/libmdnsd/1035.c
@@ -334,10 +334,10 @@ static bool _rrparse(struct message *m, struct resource *rr, int count, const un
                 return false;
             }
 
-			rr[i].rdata = m->_packet + m->_len;
             if (m->_len + rr[i].rdlength > MAX_PACKET_LEN) {
                 return false;
             }
+			rr[i].rdata = m->_packet + m->_len;
 			m->_len += rr[i].rdlength;
 			memcpy(rr[i].rdata, *bufp, rr[i].rdlength);
 		}