Fix a memory leak issue in catz_process_primaries()

Free the old version of the keyname (if it exists) before setting
the new one.

(cherry picked from commit 4576a67a935b59191119e1b3f8f1ebce1521f3c8)

diff --git a/lib/dns/catz.c b/lib/dns/catz.c
index 2924a134628318e4e136f7529fddf4414d5ecd8c..37e940b2e958b755f86838ad815e76b9f8515cac 100644 (file)
--- a/lib/dns/catz.c
+++ b/lib/dns/catz.c
@@ -1490,6 +1490,14 @@ catz_process_primaries(dns_catz_zone_t *catz, dns_ipkeylist_t *ipkl,
 
                if (i < ipkl->count) { /* we have this record already */
                        if (value->type == dns_rdatatype_txt) {
+                               if (ipkl->keys[i] != NULL) {
+                                       if (dns_name_dynamic(ipkl->keys[i])) {
+                                               dns_name_free(ipkl->keys[i],
+                                                             mctx);
+                                       }
+                                       isc_mem_put(mctx, ipkl->keys[i],
+                                                   sizeof(*ipkl->keys[i]));
+                               }
                                ipkl->keys[i] = keyname;
                        } else { /* A/AAAA */
                                memmove(&ipkl->addrs[i], &sockaddr,