From: Aram Sargsyan <aram@isc.org>
Date: Fri, 27 Jan 2023 18:04:41 +0000 (+0000)
Subject: Searching catzs->zones requires a read lock
X-Git-Tag: v9.19.11~20^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ef0c86632c838c3f342fe1c6d8cdef1b327cde6;p=thirdparty%2Fbind9.git

Searching catzs->zones requires a read lock

Lock the catzs->lock mutex before searching in the catzs->zones
hash table.
---

diff --git a/lib/dns/catz.c b/lib/dns/catz.c
index 7e28528f571..97241d1352c 100644
--- a/lib/dns/catz.c
+++ b/lib/dns/catz.c
@@ -910,8 +910,10 @@ dns_catz_get_zone(dns_catz_zones_t *catzs, const dns_name_t *name) {
 	REQUIRE(DNS_CATZ_ZONES_VALID(catzs));
 	REQUIRE(ISC_MAGIC_VALID(name, DNS_NAME_MAGIC));
 
+	LOCK(&catzs->lock);
 	result = isc_ht_find(catzs->zones, name->ndata, name->length,
 			     (void **)&found);
+	UNLOCK(&catzs->lock);
 	if (result != ISC_R_SUCCESS) {
 		return (NULL);
 	}