!147 [sync] PR-146: fix CVE-2022-3736,CVE-2022-3924,CVE-2022-3094

From: @openeuler-sync-bot Reviewed-by: @kircher Signed-off-by: @kircher
2023-02-06 02:04:38 +00:00 · 2023-02-06 02:04:38 +00:00 · 6dac95cbc4
commit 6dac95cbc4
parent 723c00d300 e990b4064e
6 changed files with 1179 additions and 1 deletions
--- a/backport-CVE-2022-3094-add-a-configuration-option-for-the-update-quota.patch
+++ b/backport-CVE-2022-3094-add-a-configuration-option-for-the-update-quota.patch
@ -0,0 +1,267 @@
+From 7fe2204a2e8952bf892e4a70fea2ef5167e1f509 Mon Sep 17 00:00:00 2001
+From: Evan Hunt <each@isc.org>
+Date: Thu, 1 Sep 2022 16:22:46 -0700
+Subject: [PATCH] add a configuration option for the update quota
+
+add an "update-quota" option to configure the update quota.
+
+Conflict: NA
+Reference: https://gitlab.isc.org/isc-projects/bind9/-/commit/82185f4f80d2fa39a4569f6740cb360ffff8f5c4
+(cherry picked from commit f57758a7303ad0034ff2ff08eaaf2ef899630f19)
+---
+ bin/named/config.c                   | 1 +
+ bin/named/named.conf.rst             | 9 +++++----
+ bin/named/server.c                   | 1 +
+ bin/tests/system/checkconf/good.conf | 1 +
+ doc/arm/reference.rst                | 7 ++++++-
+ doc/man/named.conf.5in               | 9 +++++----
+ doc/misc/master.zoneopt.rst          | 2 +-
+ doc/misc/options                     | 1 +
+ doc/misc/options.active              | 1 +
+ doc/misc/options.grammar.rst         | 3 ++-
+ doc/misc/slave.zoneopt.rst           | 2 +-
+ lib/isccfg/namedconf.c               | 1 +
+ 12 files changed, 26 insertions(+), 12 deletions(-)
+
+diff --git a/bin/named/config.c b/bin/named/config.c
+index 5fedee84d99..494147015ff 100644
+--- a/bin/named/config.c
+++ b/bin/named/config.c
+@@ -130,6 +130,7 @@ options {\n\
+ 	transfers-out 10;\n\
+ 	transfers-per-ns 2;\n\
+ 	trust-anchor-telemetry yes;\n\
+	update-quota 100;\n\
+ \n\
+ 	/* view */\n\
+ 	allow-new-zones no;\n\
+diff --git a/bin/named/named.conf.rst b/bin/named/named.conf.rst
+index 27eed5ca3e4..4c9f9a73704 100644
+--- a/bin/named/named.conf.rst
+++ b/bin/named/named.conf.rst
+@@ -179,7 +179,7 @@ OPTIONS
+   	answer-cookie boolean;
+   	attach-cache string;
+   	auth-nxdomain boolean; // default changed
+-  	auto-dnssec ( allow | maintain | off );
+  	auto-dnssec ( allow | maintain | off );// deprecated
+   	automatic-interface-scan boolean;
+   	avoid-v4-udp-ports { portrange; ... };
+   	avoid-v6-udp-ports { portrange; ... };
+@@ -446,6 +446,7 @@ OPTIONS
+   	trust-anchor-telemetry boolean; // experimental
+   	try-tcp-refresh boolean;
+   	update-check-ksk boolean;
+  	update-quota integer;
+   	use-alt-transfer-source boolean;
+   	use-v4-udp-ports { portrange; ... };
+   	use-v6-udp-ports { portrange; ... };
+@@ -584,7 +585,7 @@ VIEW
+   	    * ) ] [ dscp integer ];
+   	attach-cache string;
+   	auth-nxdomain boolean; // default changed
+-  	auto-dnssec ( allow | maintain | off );
+  	auto-dnssec ( allow | maintain | off );// deprecated
+   	cache-file quoted_string;// deprecated
+   	catalog-zones { zone string [ default-masters [ port integer ]
+   	    [ dscp integer ] { ( remote-servers | ipv4_address [ port
+@@ -859,7 +860,7 @@ VIEW
+   		    integer | * ) ] [ dscp integer ];
+   		alt-transfer-source-v6 ( ipv6_address | * ) [ port (
+   		    integer | * ) ] [ dscp integer ];
+-  		auto-dnssec ( allow | maintain | off );
+  		auto-dnssec ( allow | maintain | off );// deprecated
+   		check-dup-records ( fail | warn | ignore );
+   		check-integrity boolean;
+   		check-mx ( fail | warn | ignore );
+@@ -977,7 +978,7 @@ ZONE
+   	    ] [ dscp integer ];
+   	alt-transfer-source-v6 ( ipv6_address | * ) [ port ( integer |
+   	    * ) ] [ dscp integer ];
+-  	auto-dnssec ( allow | maintain | off );
+  	auto-dnssec ( allow | maintain | off );// deprecated
+   	check-dup-records ( fail | warn | ignore );
+   	check-integrity boolean;
+   	check-mx ( fail | warn | ignore );
+diff --git a/bin/named/server.c b/bin/named/server.c
+index 20443ff8a94..78a21d62a20 100644
+--- a/bin/named/server.c
+++ b/bin/named/server.c
+@@ -8542,6 +8542,7 @@ load_configuration(const char *filename, named_server_t *server,
+ 	configure_server_quota(maps, "tcp-clients", &server->sctx->tcpquota);
+ 	configure_server_quota(maps, "recursive-clients",
+ 			       &server->sctx->recursionquota);
+	configure_server_quota(maps, "update-quota", &server->sctx->updquota);
+ 
+ 	max = isc_quota_getmax(&server->sctx->recursionquota);
+ 	if (max > 1000) {
+diff --git a/bin/tests/system/checkconf/good.conf b/bin/tests/system/checkconf/good.conf
+index b1f7059acf8..0ecdb68e95a 100644
+--- a/bin/tests/system/checkconf/good.conf
+++ b/bin/tests/system/checkconf/good.conf
+@@ -75,6 +75,7 @@ options {
+ 	recursive-clients 3000;
+ 	serial-query-rate 100;
+ 	server-id none;
+	update-quota 200;
+ 	check-names primary warn;
+ 	check-names secondary ignore;
+ 	max-cache-size 20000000000000;
+diff --git a/doc/arm/reference.rst b/doc/arm/reference.rst
+index 2603d602518..703663d0ba6 100644
+--- a/doc/arm/reference.rst
+++ b/doc/arm/reference.rst
+@@ -3151,6 +3151,11 @@ system.
+    value as ``tcp-keepalive-timeout``. This value can be updated at
+    runtime by using ``rndc tcp-timeouts``.
+ 
+``update-quota``
+   This is the maximum number of simultaneous DNS UPDATE messages that
+   the server will accept for updating local authoritiative zones or
+   forwarding to a primary server. The default is ``100``.
+
+ .. _intervals:
+ 
+ Periodic Task Intervals
+@@ -6840,7 +6845,7 @@ Name Server Statistics Counters
+ ``UpdateQuota``
+     This indicates the number of times a dynamic update or update
+     forwarding request was rejected because the number of pending
+-    requests exceeded the update quota.
+    requests exceeded ``update-quota``.
+ 
+ ``RateDropped``
+     This indicates the number of responses dropped due to rate limits.
+diff --git a/doc/man/named.conf.5in b/doc/man/named.conf.5in
+index 4c46f475929..c87afa28813 100644
+--- a/doc/man/named.conf.5in
+++ b/doc/man/named.conf.5in
+@@ -231,7 +231,7 @@ options {
+       answer\-cookie boolean;
+       attach\-cache string;
+       auth\-nxdomain boolean; // default changed
+-      auto\-dnssec ( allow | maintain | off );
+      auto\-dnssec ( allow | maintain | off );// deprecated
+       automatic\-interface\-scan boolean;
+       avoid\-v4\-udp\-ports { portrange; ... };
+       avoid\-v6\-udp\-ports { portrange; ... };
+@@ -498,6 +498,7 @@ options {
+       trust\-anchor\-telemetry boolean; // experimental
+       try\-tcp\-refresh boolean;
+       update\-check\-ksk boolean;
+      update\-quota integer;
+       use\-alt\-transfer\-source boolean;
+       use\-v4\-udp\-ports { portrange; ... };
+       use\-v6\-udp\-ports { portrange; ... };
+@@ -668,7 +669,7 @@ view string [ class ] {
+           * ) ] [ dscp integer ];
+       attach\-cache string;
+       auth\-nxdomain boolean; // default changed
+-      auto\-dnssec ( allow | maintain | off );
+      auto\-dnssec ( allow | maintain | off );// deprecated
+       cache\-file quoted_string;// deprecated
+       catalog\-zones { zone string [ default\-masters [ port integer ]
+           [ dscp integer ] { ( remote\-servers | ipv4_address [ port
+@@ -943,7 +944,7 @@ view string [ class ] {
+                   integer | * ) ] [ dscp integer ];
+               alt\-transfer\-source\-v6 ( ipv6_address | * ) [ port (
+                   integer | * ) ] [ dscp integer ];
+-              auto\-dnssec ( allow | maintain | off );
+              auto\-dnssec ( allow | maintain | off );// deprecated
+               check\-dup\-records ( fail | warn | ignore );
+               check\-integrity boolean;
+               check\-mx ( fail | warn | ignore );
+@@ -1065,7 +1066,7 @@ zone string [ class ] {
+           ] [ dscp integer ];
+       alt\-transfer\-source\-v6 ( ipv6_address | * ) [ port ( integer |
+           * ) ] [ dscp integer ];
+-      auto\-dnssec ( allow | maintain | off );
+      auto\-dnssec ( allow | maintain | off );// deprecated
+       check\-dup\-records ( fail | warn | ignore );
+       check\-integrity boolean;
+       check\-mx ( fail | warn | ignore );
+diff --git a/doc/misc/master.zoneopt.rst b/doc/misc/master.zoneopt.rst
+index 8fc7e1b4f0d..346d59813ee 100644
+--- a/doc/misc/master.zoneopt.rst
+++ b/doc/misc/master.zoneopt.rst
+@@ -20,7 +20,7 @@
+   	also-notify [ port <integer> ] [ dscp <integer> ] { ( <remote-servers> | <ipv4_address> [ port <integer> ] | <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
+   	alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [ dscp <integer> ];
+   	alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ] [ dscp <integer> ];
+-  	auto-dnssec ( allow | maintain | off );
+  	auto-dnssec ( allow | maintain | off ); // deprecated
+   	check-dup-records ( fail | warn | ignore );
+   	check-integrity <boolean>;
+   	check-mx ( fail | warn | ignore );
+diff --git a/doc/misc/options b/doc/misc/options
+index f57399499a5..0dbcf101e1c 100644
+--- a/doc/misc/options
+++ b/doc/misc/options
+@@ -404,6 +404,7 @@ options {
+         trust-anchor-telemetry <boolean>; // experimental
+         try-tcp-refresh <boolean>;
+         update-check-ksk <boolean>;
+        update-quota <integer>;
+         use-alt-transfer-source <boolean>;
+         use-id-pool <boolean>; // ancient
+         use-ixfr <boolean>; // obsolete
+diff --git a/doc/misc/options.active b/doc/misc/options.active
+index 5fc1ab29f42..eb75a86eae9 100644
+--- a/doc/misc/options.active
+++ b/doc/misc/options.active
+@@ -363,6 +363,7 @@ options {
+         trust-anchor-telemetry <boolean>; // experimental
+         try-tcp-refresh <boolean>;
+         update-check-ksk <boolean>;
+        update-quota <integer>;
+         use-alt-transfer-source <boolean>;
+         use-v4-udp-ports { <portrange>; ... };
+         use-v6-udp-ports { <portrange>; ... };
+diff --git a/doc/misc/options.grammar.rst b/doc/misc/options.grammar.rst
+index 438072c95c4..beef35341a1 100644
+--- a/doc/misc/options.grammar.rst
+++ b/doc/misc/options.grammar.rst
+@@ -33,7 +33,7 @@
+   	answer-cookie <boolean>;
+   	attach-cache <string>;
+   	auth-nxdomain <boolean>; // default changed
+-  	auto-dnssec ( allow | maintain | off );
+  	auto-dnssec ( allow | maintain | off ); // deprecated
+   	automatic-interface-scan <boolean>;
+   	avoid-v4-udp-ports { <portrange>; ... };
+   	avoid-v6-udp-ports { <portrange>; ... };
+@@ -300,6 +300,7 @@
+   	trust-anchor-telemetry <boolean>; // experimental
+   	try-tcp-refresh <boolean>;
+   	update-check-ksk <boolean>;
+  	update-quota <integer>;
+   	use-alt-transfer-source <boolean>;
+   	use-v4-udp-ports { <portrange>; ... };
+   	use-v6-udp-ports { <portrange>; ... };
+diff --git a/doc/misc/slave.zoneopt.rst b/doc/misc/slave.zoneopt.rst
+index cc72dcbf677..468a7f4d9a3 100644
+--- a/doc/misc/slave.zoneopt.rst
+++ b/doc/misc/slave.zoneopt.rst
+@@ -21,7 +21,7 @@
+   	also-notify [ port <integer> ] [ dscp <integer> ] { ( <remote-servers> | <ipv4_address> [ port <integer> ] | <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
+   	alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [ dscp <integer> ];
+   	alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ] [ dscp <integer> ];
+-  	auto-dnssec ( allow | maintain | off );
+  	auto-dnssec ( allow | maintain | off ); // deprecated
+   	check-names ( fail | warn | ignore );
+   	database <string>;
+   	dialup ( notify | notify-passive | passive | refresh | <boolean> );
+diff --git a/lib/isccfg/namedconf.c b/lib/isccfg/namedconf.c
+index 45de0196bf4..6e63d86816e 100644
+--- a/lib/isccfg/namedconf.c
+++ b/lib/isccfg/namedconf.c
+@@ -1267,6 +1267,7 @@ static cfg_clausedef_t options_clauses[] = {
+ 	{ "transfers-out", &cfg_type_uint32, 0 },
+ 	{ "transfers-per-ns", &cfg_type_uint32, 0 },
+ 	{ "treat-cr-as-space", &cfg_type_boolean, CFG_CLAUSEFLAG_ANCIENT },
+	{ "update-quota", &cfg_type_uint32, 0 },
+ 	{ "use-id-pool", &cfg_type_boolean, CFG_CLAUSEFLAG_ANCIENT },
+ 	{ "use-ixfr", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
+ 	{ "use-v4-udp-ports", &cfg_type_bracketed_portlist, 0 },
+-- 
+GitLab
--- a/backport-CVE-2022-3094-add-an-update-quota.patch
+++ b/backport-CVE-2022-3094-add-an-update-quota.patch
@ -0,0 +1,242 @@
+From 35711a29e5002fce5fb56af163c5a3db81b33bed Mon Sep 17 00:00:00 2001
+From: Evan Hunt <each@isc.org>
+Date: Thu, 1 Sep 2022 16:05:04 -0700
+Subject: [PATCH] add an update quota
+
+limit the number of simultaneous DNS UPDATE events that can be
+processed by adding a quota for update and update forwarding.
+this quota currently, arbitrarily, defaults to 100.
+
+also add a statistics counter to record when the update quota
+has been exceeded.
+
+Conflict: NA
+Reference: https://gitlab.isc.org/isc-projects/bind9/-/commit/82185f4f80d2fa39a4569f6740cb360ffff8f5c4
+(cherry picked from commit 7c47254a140c3e9cf383cda73c7b6a55c4782826)
+---
+ bin/named/bind9.xsl        |  4 +++-
+ bin/named/bind9.xsl.h      |  6 +++++-
+ bin/named/statschannel.c   |  5 +++--
+ doc/arm/reference.rst      |  5 +++++
+ lib/ns/include/ns/server.h |  1 +
+ lib/ns/include/ns/stats.h  |  4 +++-
+ lib/ns/server.c            |  2 ++
+ lib/ns/update.c            | 38 +++++++++++++++++++++++++++++++++++++-
+ 8 files changed, 59 insertions(+), 6 deletions(-)
+
+diff --git a/bin/named/bind9.xsl b/bin/named/bind9.xsl
+index 5078115..194625b 100644
+--- a/bin/named/bind9.xsl
+++ b/bin/named/bind9.xsl
+@@ -12,7 +12,9 @@
+ 
+ <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns="http://www.w3.org/1999/xhtml" version="1.0">
+   <xsl:output method="html" indent="yes" version="4.0"/>
+-  <xsl:template match="statistics[@version=&quot;3.11&quot;]">
+  <!-- the version number **below** must match version in bin/named/statschannel.c -->
+  <!-- don't forget to update "/xml/v<STATS_XML_VERSION_MAJOR>" in the HTTP endpoints listed below -->
+  <xsl:template match="statistics[@version=&quot;3.11.1&quot;]">
+     <html>
+       <head>
+         <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
+diff --git a/bin/named/bind9.xsl.h b/bin/named/bind9.xsl.h
+index e30f7f5..b182742 100644
+--- a/bin/named/bind9.xsl.h
+++ b/bin/named/bind9.xsl.h
+@@ -20,7 +20,11 @@ static char xslmsg[] =
+ 	"<xsl:stylesheet xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" "
+ 	"xmlns=\"http://www.w3.org/1999/xhtml\" version=\"1.0\">\n"
+ 	" <xsl:output method=\"html\" indent=\"yes\" version=\"4.0\"/>\n"
+-	" <xsl:template match=\"statistics[@version=&quot;3.11&quot;]\">\n"
+	" <!-- the version number **below** must match version in "
+	"bin/named/statschannel.c -->\n"
+	" <!-- don't forget to update \"/xml/v<STATS_XML_VERSION_MAJOR>\" in "
+	"the HTTP endpoints listed below -->\n"
+	" <xsl:template match=\"statistics[@version=&quot;3.11.1&quot;]\">\n"
+ 	" <html>\n"
+ 	" <head>\n"
+ 	" <script type=\"text/javascript\" "
+diff --git a/bin/named/statschannel.c b/bin/named/statschannel.c
+index 8ff2567..0927eb1 100644
+--- a/bin/named/statschannel.c
+++ b/bin/named/statschannel.c
+@@ -335,6 +335,7 @@ init_desc(void) {
+ 	SET_NSSTATDESC(reclimitdropped,
+ 		       "queries dropped due to recursive client limit",
+ 		       "RecLimitDropped");
+	SET_NSSTATDESC(updatequota, "Update quota exceeded", "UpdateQuota");
+ 
+ 	INSIST(i == ns_statscounter_max);
+ 
+@@ -2007,7 +2008,7 @@ generatexml(named_server_t *server, uint32_t flags, int *buflen,
+ 					      "href=\"/bind9.xsl\""));
+ 	TRY0(xmlTextWriterStartElement(writer, ISC_XMLCHAR "statistics"));
+ 	TRY0(xmlTextWriterWriteAttribute(writer, ISC_XMLCHAR "version",
+-					 ISC_XMLCHAR "3.11"));
+					 ISC_XMLCHAR "3.11.1"));
+ 
+ 	/* Set common fields for statistics dump */
+ 	dumparg.type = isc_statsformat_xml;
+@@ -2875,7 +2876,7 @@ generatejson(named_server_t *server, size_t *msglen, const char **msg,
+ 	/*
+ 	 * These statistics are included no matter which URL we use.
+ 	 */
+-	obj = json_object_new_string("1.5");
+	obj = json_object_new_string("1.5.1");
+ 	CHECKMEM(obj);
+ 	json_object_object_add(bindstats, "json-stats-version", obj);
+ 
+diff --git a/doc/arm/reference.rst b/doc/arm/reference.rst
+index 2d05aec..25c20d7 100644
+--- a/doc/arm/reference.rst
+++ b/doc/arm/reference.rst
+@@ -6705,6 +6705,11 @@ Name Server Statistics Counters
+ ``UpdateBadPrereq``
+     This indicates the number of dynamic updates rejected due to a prerequisite failure.
+ 
+``UpdateQuota``
+    This indicates the number of times a dynamic update or update
+    forwarding request was rejected because the number of pending
+    requests exceeded the update quota.
+
+ ``RateDropped``
+     This indicates the number of responses dropped due to rate limits.
+ 
+diff --git a/lib/ns/include/ns/server.h b/lib/ns/include/ns/server.h
+index 6a1f345..0abb579 100644
+--- a/lib/ns/include/ns/server.h
+++ b/lib/ns/include/ns/server.h
+@@ -84,6 +84,7 @@ struct ns_server {
+ 	isc_quota_t recursionquota;
+ 	isc_quota_t tcpquota;
+ 	isc_quota_t xfroutquota;
+	isc_quota_t updquota;
+ 
+ 	/*% Test options and other configurables */
+ 	uint32_t options;
+diff --git a/lib/ns/include/ns/stats.h b/lib/ns/include/ns/stats.h
+index 3c08799..95b15d0 100644
+--- a/lib/ns/include/ns/stats.h
+++ b/lib/ns/include/ns/stats.h
+@@ -106,7 +106,9 @@ enum {
+ 
+ 	ns_statscounter_reclimitdropped = 66,
+ 
+-	ns_statscounter_max = 67,
+	ns_statscounter_updatequota = 67,
+
+	ns_statscounter_max = 68,
+ };
+ 
+ void
+diff --git a/lib/ns/server.c b/lib/ns/server.c
+index a970a28..540bc2e 100644
+--- a/lib/ns/server.c
+++ b/lib/ns/server.c
+@@ -52,6 +52,7 @@ ns_server_create(isc_mem_t *mctx, ns_matchview_t matchingview,
+ 	isc_quota_init(&sctx->xfroutquota, 10);
+ 	isc_quota_init(&sctx->tcpquota, 10);
+ 	isc_quota_init(&sctx->recursionquota, 100);
+	isc_quota_init(&sctx->updquota, 100);
+ 
+ 	CHECKFATAL(dns_tkeyctx_create(mctx, &sctx->tkeyctx));
+ 
+@@ -131,6 +132,7 @@ ns_server_detach(ns_server_t **sctxp) {
+ 			isc_mem_put(sctx->mctx, altsecret, sizeof(*altsecret));
+ 		}
+ 
+		isc_quota_destroy(&sctx->updquota);
+ 		isc_quota_destroy(&sctx->recursionquota);
+ 		isc_quota_destroy(&sctx->tcpquota);
+ 		isc_quota_destroy(&sctx->xfroutquota);
+diff --git a/lib/ns/update.c b/lib/ns/update.c
+index 582d4ff..a1650de 100644
+--- a/lib/ns/update.c
+++ b/lib/ns/update.c
+@@ -1544,6 +1544,19 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
+ 	update_event_t *event = NULL;
+ 	isc_task_t *zonetask = NULL;
+ 
+	result = isc_quota_attach(&client->manager->sctx->updquota,
+				  &(isc_quota_t *){ NULL });
+	if (result != ISC_R_SUCCESS) {
+		update_log(client, zone, LOGLEVEL_PROTOCOL,
+			   "update failed: too many DNS UPDATEs queued (%s)",
+			   isc_result_totext(result));
+		ns_stats_increment(client->manager->sctx->nsstats,
+				   ns_statscounter_updatequota);
+		ns_client_drop(client, result);
+		isc_nmhandle_detach(&client->reqhandle);
+		return (DNS_R_DROP);
+	}
+
+ 	event = (update_event_t *)isc_event_allocate(
+ 		client->mctx, client, DNS_EVENT_UPDATE, update_action, NULL,
+ 		sizeof(*event));
+@@ -1685,12 +1698,19 @@ failure:
+ 		       dns_zone_gettype(zone) == dns_zone_mirror);
+ 		inc_stats(client, zone, ns_statscounter_updaterej);
+ 	}
+
+ 	/*
+ 	 * We failed without having sent an update event to the zone.
+ 	 * We are still in the client task context, so we can
+ 	 * simply give an error response without switching tasks.
+ 	 */
+-	respond(client, result);
+	if (result == DNS_R_DROP) {
+		ns_client_drop(client, result);
+		isc_nmhandle_detach(&client->reqhandle);
+	} else {
+		respond(client, result);
+	}
+
+ 	if (zone != NULL) {
+ 		dns_zone_detach(&zone);
+ 	}
+@@ -3498,6 +3518,7 @@ updatedone_action(isc_task_t *task, isc_event_t *event) {
+ 
+ 	respond(client, uev->result);
+ 
+	isc_quota_detach(&(isc_quota_t *){ &client->manager->sctx->updquota });
+ 	isc_event_free(&event);
+ 	isc_nmhandle_detach(&client->updatehandle);
+ }
+@@ -3514,6 +3535,8 @@ forward_fail(isc_task_t *task, isc_event_t *event) {
+ 	INSIST(client->nupdates > 0);
+ 	client->nupdates--;
+ 	respond(client, DNS_R_SERVFAIL);
+
+	isc_quota_detach(&(isc_quota_t *){ &client->manager->sctx->updquota });
+ 	isc_event_free(&event);
+ 	isc_nmhandle_detach(&client->updatehandle);
+ }
+@@ -3551,6 +3574,8 @@ forward_done(isc_task_t *task, isc_event_t *event) {
+ 	client->nupdates--;
+ 	ns_client_sendraw(client, uev->answer);
+ 	dns_message_detach(&uev->answer);
+
+	isc_quota_detach(&(isc_quota_t *){ &client->manager->sctx->updquota });
+ 	isc_event_free(&event);
+ 	isc_nmhandle_detach(&client->updatehandle);
+ }
+@@ -3585,6 +3610,17 @@ send_forward_event(ns_client_t *client, dns_zone_t *zone) {
+ 	update_event_t *event = NULL;
+ 	isc_task_t *zonetask = NULL;
+ 
+	result = isc_quota_attach(&client->manager->sctx->updquota,
+				  &(isc_quota_t *){ NULL });
+	if (result != ISC_R_SUCCESS) {
+		update_log(client, zone, LOGLEVEL_PROTOCOL,
+			   "update failed: too many DNS UPDATEs queued (%s)",
+			   isc_result_totext(result));
+		ns_stats_increment(client->manager->sctx->nsstats,
+				   ns_statscounter_updatequota);
+		return (DNS_R_DROP);
+	}
+
+ 	event = (update_event_t *)isc_event_allocate(
+ 		client->mctx, client, DNS_EVENT_UPDATE, forward_action, NULL,
+ 		sizeof(*event));
+-- 
+GitLab
--- a/backport-CVE-2022-3094-move-update-ACL-and-update-policy-checks-before-quota.patch
+++ b/backport-CVE-2022-3094-move-update-ACL-and-update-policy-checks-before-quota.patch
@ -0,0 +1,473 @@
+From eb98d96481a37414369005857387be0d34544de0 Mon Sep 17 00:00:00 2001
+From: Evan Hunt <each@isc.org>
+Date: Tue, 8 Nov 2022 17:32:41 -0800
+Subject: [PATCH] move update ACL and update-policy checks before quota
+
+check allow-update, update-policy, and allow-update-forwarding before
+consuming quota slots, so that unauthorized clients can't fill the
+quota.
+
+(this moves the access check before the prerequisite check, which
+violates the precise wording of RFC 2136. however, RFC co-author Paul
+Vixie has stated that the RFC is mistaken on this point; it should have
+said that access checking must happen *no later than* the completion of
+prerequisite checks, not that it must happen exactly then.)
+
+Conflict: NA
+Reference: https://gitlab.isc.org/isc-projects/bind9/-/commit/82185f4f80d2fa39a4569f6740cb360ffff8f5c4
+(cherry picked from commit 964f559edb5036880b8e463b8f190b9007ee055d)
+---
+ lib/ns/update.c | 336 ++++++++++++++++++++++++++----------------------
+ 1 file changed, 182 insertions(+), 154 deletions(-)
+
+diff --git a/lib/ns/update.c b/lib/ns/update.c
+index a69b6e5..071de25 100644
+--- a/lib/ns/update.c
+++ b/lib/ns/update.c
+@@ -261,6 +261,9 @@ static void
+ forward_done(isc_task_t *task, isc_event_t *event);
+ static isc_result_t
+ add_rr_prepare_action(void *data, rr_t *rr);
+static isc_result_t
+rr_exists(dns_db_t *db, dns_dbversion_t *ver, dns_name_t *name,
+	  const dns_rdata_t *rdata, bool *flag);
+ 
+ /**************************************************************************/
+ 
+@@ -333,25 +336,26 @@ inc_stats(ns_client_t *client, dns_zone_t *zone, isc_statscounter_t counter) {
+ static isc_result_t
+ checkqueryacl(ns_client_t *client, dns_acl_t *queryacl, dns_name_t *zonename,
+ 	      dns_acl_t *updateacl, dns_ssutable_t *ssutable) {
+	isc_result_t result;
+ 	char namebuf[DNS_NAME_FORMATSIZE];
+ 	char classbuf[DNS_RDATACLASS_FORMATSIZE];
+-	int level;
+-	isc_result_t result;
+	bool update_possible =
+		((updateacl != NULL && !dns_acl_isnone(updateacl)) ||
+		 ssutable != NULL);
+ 
+ 	result = ns_client_checkaclsilent(client, NULL, queryacl, true);
+ 	if (result != ISC_R_SUCCESS) {
+		int level = update_possible ? ISC_LOG_ERROR : ISC_LOG_INFO;
+		
+ 		dns_name_format(zonename, namebuf, sizeof(namebuf));
+ 		dns_rdataclass_format(client->view->rdclass, classbuf,
+ 				      sizeof(classbuf));
+ 
+-		level = (updateacl == NULL && ssutable == NULL) ? ISC_LOG_INFO
+-								: ISC_LOG_ERROR;
+-
+ 		ns_client_log(client, NS_LOGCATEGORY_UPDATE_SECURITY,
+ 			      NS_LOGMODULE_UPDATE, level,
+ 			      "update '%s/%s' denied due to allow-query",
+ 			      namebuf, classbuf);
+-	} else if (updateacl == NULL && ssutable == NULL) {
+	} else if (!update_possible) {
+ 		dns_name_format(zonename, namebuf, sizeof(namebuf));
+ 		dns_rdataclass_format(client->view->rdclass, classbuf,
+ 				      sizeof(classbuf));
+@@ -1543,6 +1547,156 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
+ 	isc_result_t result = ISC_R_SUCCESS;
+ 	update_event_t *event = NULL;
+ 	isc_task_t *zonetask = NULL;
+	dns_ssutable_t *ssutable = NULL;
+	dns_message_t *request = client->message;
+	dns_aclenv_t *env =
+		ns_interfacemgr_getaclenv(client->manager->interface->mgr);
+	dns_rdataclass_t zoneclass;
+	dns_rdatatype_t covers;
+	dns_name_t *zonename = NULL;
+	dns_db_t *db = NULL;
+	dns_dbversion_t *ver = NULL;
+
+	CHECK(dns_zone_getdb(zone, &db));
+	zonename = dns_db_origin(db);
+	zoneclass = dns_db_class(db);
+	dns_zone_getssutable(zone, &ssutable);
+	dns_db_currentversion(db, &ver);
+
+	/*
+	 * Update message processing can leak record existence information
+	 * so check that we are allowed to query this zone.  Additionally,
+	 * if we would refuse all updates for this zone, we bail out here.
+	 */
+	CHECK(checkqueryacl(client, dns_zone_getqueryacl(zone),
+			    dns_zone_getorigin(zone),
+			    dns_zone_getupdateacl(zone), ssutable));
+
+	/*
+	 * Check requestor's permissions.
+	 */
+	if (ssutable == NULL) {
+		CHECK(checkupdateacl(client, dns_zone_getupdateacl(zone),
+				     "update", dns_zone_getorigin(zone), false,
+				     false));
+	} else if (client->signer == NULL && !TCPCLIENT(client)) {
+		CHECK(checkupdateacl(client, NULL, "update",
+				     dns_zone_getorigin(zone), false, true));
+	}
+
+	if (dns_zone_getupdatedisabled(zone)) {
+		FAILC(DNS_R_REFUSED, "dynamic update temporarily disabled "
+				     "because the zone is frozen.  Use "
+				     "'rndc thaw' to re-enable updates.");
+	}
+
+	/*
+	 * Prescan the update section, checking for updates that
+	 * are illegal or violate policy.
+	 */
+	for (result = dns_message_firstname(request, DNS_SECTION_UPDATE);
+	     result == ISC_R_SUCCESS;
+	     result = dns_message_nextname(request, DNS_SECTION_UPDATE))
+	{
+		dns_name_t *name = NULL;
+		dns_rdata_t rdata = DNS_RDATA_INIT;
+		dns_ttl_t ttl;
+		dns_rdataclass_t update_class;
+
+		get_current_rr(request, DNS_SECTION_UPDATE, zoneclass, &name,
+			       &rdata, &covers, &ttl, &update_class);
+
+		if (!dns_name_issubdomain(name, zonename)) {
+			FAILC(DNS_R_NOTZONE, "update RR is outside zone");
+		}
+		if (update_class == zoneclass) {
+			/*
+			 * Check for meta-RRs.  The RFC2136 pseudocode says
+			 * check for ANY|AXFR|MAILA|MAILB, but the text adds
+			 * "or any other QUERY metatype"
+			 */
+			if (dns_rdatatype_ismeta(rdata.type)) {
+				FAILC(DNS_R_FORMERR, "meta-RR in update");
+			}
+			result = dns_zone_checknames(zone, name, &rdata);
+			if (result != ISC_R_SUCCESS) {
+				FAIL(DNS_R_REFUSED);
+			}
+		} else if (update_class == dns_rdataclass_any) {
+			if (ttl != 0 || rdata.length != 0 ||
+			    (dns_rdatatype_ismeta(rdata.type) &&
+			     rdata.type != dns_rdatatype_any))
+			{
+				FAILC(DNS_R_FORMERR, "meta-RR in update");
+			}
+		} else if (update_class == dns_rdataclass_none) {
+			if (ttl != 0 || dns_rdatatype_ismeta(rdata.type)) {
+				FAILC(DNS_R_FORMERR, "meta-RR in update");
+			}
+		} else {
+			update_log(client, zone, ISC_LOG_WARNING,
+				   "update RR has incorrect class %d",
+				   update_class);
+			FAIL(DNS_R_FORMERR);
+		}
+
+		/*
+		 * draft-ietf-dnsind-simple-secure-update-01 says
+		 * "Unlike traditional dynamic update, the client
+		 * is forbidden from updating NSEC records."
+		 */
+		if (rdata.type == dns_rdatatype_nsec3) {
+			FAILC(DNS_R_REFUSED, "explicit NSEC3 updates are not "
+					     "allowed "
+					     "in secure zones");
+		} else if (rdata.type == dns_rdatatype_nsec) {
+			FAILC(DNS_R_REFUSED, "explicit NSEC updates are not "
+					     "allowed "
+					     "in secure zones");
+		} else if (rdata.type == dns_rdatatype_rrsig &&
+			   !dns_name_equal(name, zonename))
+		{
+			FAILC(DNS_R_REFUSED, "explicit RRSIG updates are "
+					     "currently "
+					     "not supported in secure zones "
+					     "except "
+					     "at the apex");
+		}
+
+		if (ssutable != NULL) {
+			isc_netaddr_t netaddr;
+			dst_key_t *tsigkey = NULL;
+			isc_netaddr_fromsockaddr(&netaddr, &client->peeraddr);
+
+			if (client->message->tsigkey != NULL) {
+				tsigkey = client->message->tsigkey->key;
+			}
+
+			if (rdata.type != dns_rdatatype_any) {
+				if (!dns_ssutable_checkrules(
+					    ssutable, client->signer, name,
+					    &netaddr, TCPCLIENT(client), env,
+					    rdata.type, tsigkey))
+				{
+					FAILC(DNS_R_REFUSED, "rejected by "
+							     "secure update");
+				}
+			} else {
+				if (!ssu_checkall(db, ver, name, ssutable,
+						  client->signer, &netaddr, env,
+						  TCPCLIENT(client), tsigkey))
+				{
+					FAILC(DNS_R_REFUSED, "rejected by "
+							     "secure update");
+				}
+			}
+		}
+	}
+	if (result != ISC_R_NOMORE) {
+		FAIL(result);
+	}
+
+	update_log(client, zone, LOGLEVEL_DEBUG, "update section prescan OK");
+ 
+ 	result = isc_quota_attach(&client->manager->sctx->updquota,
+ 				  &(isc_quota_t *){ NULL });
+@@ -1552,9 +1706,7 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
+ 			   isc_result_totext(result));
+ 		ns_stats_increment(client->manager->sctx->nsstats,
+ 				   ns_statscounter_updatequota);
+-		ns_client_drop(client, result);
+-		isc_nmhandle_detach(&client->reqhandle);
+-		return (DNS_R_DROP);
+		CHECK(DNS_R_DROP);
+ 	}
+ 
+ 	event = (update_event_t *)isc_event_allocate(
+@@ -1571,6 +1723,17 @@ send_update_event(ns_client_t *client, dns_zone_t *zone) {
+ 	dns_zone_gettask(zone, &zonetask);
+ 	isc_task_send(zonetask, ISC_EVENT_PTR(&event));
+ 
+failure:
+	if (db != NULL) {
+		dns_db_closeversion(db, &ver, false);
+		dns_db_detach(&db);
+	}
+
+	if (ssutable != NULL) {
+		dns_ssutable_detach(&ssutable);
+	}
+
+
+ 	return (result);
+ }
+ 
+@@ -1678,9 +1841,6 @@ ns_update_start(ns_client_t *client, isc_nmhandle_t *handle,
+ 		break;
+ 	case dns_zone_secondary:
+ 	case dns_zone_mirror:
+-		CHECK(checkupdateacl(client, dns_zone_getforwardacl(zone),
+-				     "update forwarding", zonename, true,
+-				     false));
+ 		dns_message_clonebuffer(client->message);
+ 		CHECK(send_forward_event(client, zone));
+ 		break;
+@@ -1691,8 +1851,6 @@ ns_update_start(ns_client_t *client, isc_nmhandle_t *handle,
+ 
+ failure:
+ 	if (result == DNS_R_REFUSED) {
+-		INSIST(dns_zone_gettype(zone) == dns_zone_secondary ||
+-		       dns_zone_gettype(zone) == dns_zone_mirror);
+ 		inc_stats(client, zone, ns_statscounter_updaterej);
+ 	}
+ 
+@@ -2583,7 +2741,7 @@ update_action(isc_task_t *task, isc_event_t *event) {
+ 	dns_rdatatype_t covers;
+ 	dns_message_t *request = client->message;
+ 	dns_rdataclass_t zoneclass;
+-	dns_name_t *zonename;
+	dns_name_t *zonename = NULL;
+ 	dns_ssutable_t *ssutable = NULL;
+ 	dns_fixedname_t tmpnamefixed;
+ 	dns_name_t *tmpname = NULL;
+@@ -2595,8 +2753,6 @@ update_action(isc_task_t *task, isc_event_t *event) {
+ 	dns_ttl_t maxttl = 0;
+ 	uint32_t maxrecords;
+ 	uint64_t records;
+-	dns_aclenv_t *env =
+-		ns_interfacemgr_getaclenv(client->manager->interface->mgr);
+ 
+ 	INSIST(event->ev_type == DNS_EVENT_UPDATE);
+ 
+@@ -2607,14 +2763,7 @@ update_action(isc_task_t *task, isc_event_t *event) {
+ 	zonename = dns_db_origin(db);
+ 	zoneclass = dns_db_class(db);
+ 	dns_zone_getssutable(zone, &ssutable);
+-
+-	/*
+-	 * Update message processing can leak record existence information
+-	 * so check that we are allowed to query this zone.  Additionally
+-	 * if we would refuse all updates for this zone we bail out here.
+-	 */
+-	CHECK(checkqueryacl(client, dns_zone_getqueryacl(zone), zonename,
+-			    dns_zone_getupdateacl(zone), ssutable));
+	options = dns_zone_getoptions(zone);
+ 
+ 	/*
+ 	 * Get old and new versions now that queryacl has been checked.
+@@ -2750,135 +2899,10 @@ update_action(isc_task_t *task, isc_event_t *event) {
+ 
+ 	update_log(client, zone, LOGLEVEL_DEBUG, "prerequisites are OK");
+ 
+-	/*
+-	 * Check Requestor's Permissions.  It seems a bit silly to do this
+-	 * only after prerequisite testing, but that is what RFC2136 says.
+-	 */
+-	if (ssutable == NULL) {
+-		CHECK(checkupdateacl(client, dns_zone_getupdateacl(zone),
+-				     "update", zonename, false, false));
+-	} else if (client->signer == NULL && !TCPCLIENT(client)) {
+-		CHECK(checkupdateacl(client, NULL, "update", zonename, false,
+-				     true));
+-	}
+-
+-	if (dns_zone_getupdatedisabled(zone)) {
+-		FAILC(DNS_R_REFUSED, "dynamic update temporarily disabled "
+-				     "because the zone is frozen.  Use "
+-				     "'rndc thaw' to re-enable updates.");
+-	}
+-
+-	/*
+-	 * Perform the Update Section Prescan.
+-	 */
+-
+-	for (result = dns_message_firstname(request, DNS_SECTION_UPDATE);
+-	     result == ISC_R_SUCCESS;
+-	     result = dns_message_nextname(request, DNS_SECTION_UPDATE))
+-	{
+-		dns_name_t *name = NULL;
+-		dns_rdata_t rdata = DNS_RDATA_INIT;
+-		dns_ttl_t ttl;
+-		dns_rdataclass_t update_class;
+-		get_current_rr(request, DNS_SECTION_UPDATE, zoneclass, &name,
+-			       &rdata, &covers, &ttl, &update_class);
+-
+-		if (!dns_name_issubdomain(name, zonename)) {
+-			FAILC(DNS_R_NOTZONE, "update RR is outside zone");
+-		}
+-		if (update_class == zoneclass) {
+-			/*
+-			 * Check for meta-RRs.  The RFC2136 pseudocode says
+-			 * check for ANY|AXFR|MAILA|MAILB, but the text adds
+-			 * "or any other QUERY metatype"
+-			 */
+-			if (dns_rdatatype_ismeta(rdata.type)) {
+-				FAILC(DNS_R_FORMERR, "meta-RR in update");
+-			}
+-			result = dns_zone_checknames(zone, name, &rdata);
+-			if (result != ISC_R_SUCCESS) {
+-				FAIL(DNS_R_REFUSED);
+-			}
+-		} else if (update_class == dns_rdataclass_any) {
+-			if (ttl != 0 || rdata.length != 0 ||
+-			    (dns_rdatatype_ismeta(rdata.type) &&
+-			     rdata.type != dns_rdatatype_any))
+-			{
+-				FAILC(DNS_R_FORMERR, "meta-RR in update");
+-			}
+-		} else if (update_class == dns_rdataclass_none) {
+-			if (ttl != 0 || dns_rdatatype_ismeta(rdata.type)) {
+-				FAILC(DNS_R_FORMERR, "meta-RR in update");
+-			}
+-		} else {
+-			update_log(client, zone, ISC_LOG_WARNING,
+-				   "update RR has incorrect class %d",
+-				   update_class);
+-			FAIL(DNS_R_FORMERR);
+-		}
+-
+-		/*
+-		 * draft-ietf-dnsind-simple-secure-update-01 says
+-		 * "Unlike traditional dynamic update, the client
+-		 * is forbidden from updating NSEC records."
+-		 */
+-		if (rdata.type == dns_rdatatype_nsec3) {
+-			FAILC(DNS_R_REFUSED, "explicit NSEC3 updates are not "
+-					     "allowed "
+-					     "in secure zones");
+-		} else if (rdata.type == dns_rdatatype_nsec) {
+-			FAILC(DNS_R_REFUSED, "explicit NSEC updates are not "
+-					     "allowed "
+-					     "in secure zones");
+-		} else if (rdata.type == dns_rdatatype_rrsig &&
+-			   !dns_name_equal(name, zonename)) {
+-			FAILC(DNS_R_REFUSED, "explicit RRSIG updates are "
+-					     "currently "
+-					     "not supported in secure zones "
+-					     "except "
+-					     "at the apex");
+-		}
+-
+-		if (ssutable != NULL) {
+-			isc_netaddr_t netaddr;
+-			dst_key_t *tsigkey = NULL;
+-			isc_netaddr_fromsockaddr(&netaddr, &client->peeraddr);
+-
+-			if (client->message->tsigkey != NULL) {
+-				tsigkey = client->message->tsigkey->key;
+-			}
+-
+-			if (rdata.type != dns_rdatatype_any) {
+-				if (!dns_ssutable_checkrules(
+-					    ssutable, client->signer, name,
+-					    &netaddr, TCPCLIENT(client), env,
+-					    rdata.type, tsigkey))
+-				{
+-					FAILC(DNS_R_REFUSED, "rejected by "
+-							     "secure update");
+-				}
+-			} else {
+-				if (!ssu_checkall(db, ver, name, ssutable,
+-						  client->signer, &netaddr, env,
+-						  TCPCLIENT(client), tsigkey))
+-				{
+-					FAILC(DNS_R_REFUSED, "rejected by "
+-							     "secure update");
+-				}
+-			}
+-		}
+-	}
+-	if (result != ISC_R_NOMORE) {
+-		FAIL(result);
+-	}
+-
+-	update_log(client, zone, LOGLEVEL_DEBUG, "update section prescan OK");
+ 
+ 	/*
+ 	 * Process the Update Section.
+ 	 */
+-
+-	options = dns_zone_getoptions(zone);
+ 	for (result = dns_message_firstname(request, DNS_SECTION_UPDATE);
+ 	     result == ISC_R_SUCCESS;
+ 	     result = dns_message_nextname(request, DNS_SECTION_UPDATE))
+@@ -3312,10 +3336,7 @@ update_action(isc_task_t *task, isc_event_t *event) {
+ 			if (result == ISC_R_SUCCESS && records > maxrecords) {
+ 				update_log(client, zone, ISC_LOG_ERROR,
+ 					   "records in zone (%" PRIu64 ") "
+-					   "exceeds"
+-					   " max-"
+-					   "records"
+-					   " (%u)",
+					   "exceeds max-records (%u)",					   
+ 					   records, maxrecords);
+ 				result = DNS_R_TOOMANYRECORDS;
+ 				goto failure;
+@@ -3607,6 +3628,13 @@ send_forward_event(ns_client_t *client, dns_zone_t *zone) {
+ 	update_event_t *event = NULL;
+ 	isc_task_t *zonetask = NULL;
+ 
+	result = checkupdateacl(client, dns_zone_getforwardacl(zone),
+				"update forwarding", dns_zone_getorigin(zone),
+				true, false);
+	if (result != ISC_R_SUCCESS) {
+		return (result);
+	}
+
+ 	result = isc_quota_attach(&client->manager->sctx->updquota,
+ 				  &(isc_quota_t *){ NULL });
+ 	if (result != ISC_R_SUCCESS) {
+-- 
+2.33.0
+
--- a/backport-CVE-2022-3736.patch
+++ b/backport-CVE-2022-3736.patch
@ -0,0 +1,55 @@
+From 3cd0c32b0a4dc93a1e3955e17ea8efa0804964ae Mon Sep 17 00:00:00 2001
+From: Mark Andrews <marka@isc.org>
+Date: Thu, 27 Oct 2022 13:22:11 +1100
+Subject: [PATCH] Move the mapping of SIG and RRSIG to ANY
+
+dns_db_findext() asserts if RRSIG is passed to it and
+query_lookup_stale() failed to map RRSIG to ANY to prevent this.  To
+avoid cases like this in the future, move the mapping of SIG and RRSIG
+to ANY for qctx->type to qctx_init().
+
+Conflict: NA
+Reference: https://gitlab.isc.org/isc-projects/bind9/-/commit/ea79385990c564eb478c286c089ea7ed15520690
+(cherry picked from commit 56eae064183488bcf7ff08c3edf59f2e1742c1b6)
+---
+ lib/ns/query.c | 17 +++++++++--------
+ 1 file changed, 9 insertions(+), 8 deletions(-)
+
+diff --git a/lib/ns/query.c b/lib/ns/query.c
+index b822a29..1944a0b 100644
+--- a/lib/ns/query.c
+++ b/lib/ns/query.c
+@@ -5155,6 +5155,15 @@ qctx_init(ns_client_t *client, dns_fetchevent_t **eventp, dns_rdatatype_t qtype,
+ 	qctx->result = ISC_R_SUCCESS;
+ 	qctx->findcoveringnsec = qctx->view->synthfromdnssec;
+ 
+	/*
+	 * If it's an RRSIG or SIG query, we'll iterate the node.
+	 */
+	if (qctx->qtype == dns_rdatatype_rrsig ||
+	    qctx->qtype == dns_rdatatype_sig)
+	{
+		qctx->type = dns_rdatatype_any;
+	}
+
+ 	CALL_HOOK_NORETURN(NS_QUERY_QCTX_INITIALIZED, qctx);
+ }
+ 
+@@ -5295,14 +5304,6 @@ query_setup(ns_client_t *client, dns_rdatatype_t qtype) {
+ 
+ 	CALL_HOOK(NS_QUERY_SETUP, &qctx);
+ 
+-	/*
+-	 * If it's a SIG query, we'll iterate the node.
+-	 */
+-	if (qctx.qtype == dns_rdatatype_rrsig ||
+-	    qctx.qtype == dns_rdatatype_sig) {
+-		qctx.type = dns_rdatatype_any;
+-	}
+-
+ 	/*
+ 	 * Check SERVFAIL cache
+ 	 */
+-- 
+2.33.0
+
--- a/backport-CVE-2022-3924.patch
+++ b/backport-CVE-2022-3924.patch
@ -0,0 +1,129 @@
+From 6bebcedb80470698987eb1f8b5ac1a39371a887f Mon Sep 17 00:00:00 2001
+From: Aram Sargsyan <aram@isc.org>
+Date: Mon, 14 Nov 2022 12:18:06 +0000
+Subject: [PATCH] Cancel all fetch events in dns_resolver_cancelfetch()
+
+Although 'dns_fetch_t' fetch can have two associated events, one for
+each of 'DNS_EVENT_FETCHDONE' and 'DNS_EVENT_TRYSTALE' types, the
+dns_resolver_cancelfetch() function is designed in a way that it
+expects only one existing event, which it must cancel, and when it
+happens so that 'stale-answer-client-timeout' is enabled and there
+are two events, only one of them is canceled, and it results in an
+assertion in dns_resolver_destroyfetch(), when it finds a dangling
+event.
+
+Change the logic of dns_resolver_cancelfetch() function so that it
+cancels both the events (if they exist), and in the right order.
+
+Conflict: change UNREACHABLE() to INSIST(0)
+Reference: https://gitlab.isc.org/isc-projects/bind9/-/commit/b4a65aaea19762a3712932aa2270e8a833fbde22
+(cherry picked from commit ec2098ca35039e4f81fd0aa7c525eb960b8f47bf)
+---
+ lib/dns/resolver.c | 52 +++++++++++++++++++++++++++++++++++-----------
+ lib/ns/query.c     |  4 +++-
+ 2 files changed, 43 insertions(+), 13 deletions(-)
+
+diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
+index bfd5967..b1a842c 100644
+--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
+@@ -11200,8 +11200,9 @@ void
+ dns_resolver_cancelfetch(dns_fetch_t *fetch) {
+ 	fetchctx_t *fctx;
+ 	dns_resolver_t *res;
+-	dns_fetchevent_t *event, *next_event;
+-	isc_task_t *etask;
+	dns_fetchevent_t *event = NULL;
+	dns_fetchevent_t *event_trystale = NULL;
+	dns_fetchevent_t *event_fetchdone = NULL;
+ 
+ 	REQUIRE(DNS_FETCH_VALID(fetch));
+ 	fctx = fetch->private;
+@@ -11213,32 +11214,59 @@ dns_resolver_cancelfetch(dns_fetch_t *fetch) {
+ 	LOCK(&res->buckets[fctx->bucketnum].lock);
+ 
+ 	/*
+-	 * Find the completion event for this fetch (as opposed
+	 * Find the events for this fetch (as opposed
+ 	 * to those for other fetches that have joined the same
+-	 * fctx) and send it with result = ISC_R_CANCELED.
+ 	 * fctx) and send them with result = ISC_R_CANCELED.
+ 	 */
+-	event = NULL;
+ 	if (fctx->state != fetchstate_done) {
+		dns_fetchevent_t *next_event = NULL;	
+ 		for (event = ISC_LIST_HEAD(fctx->events); event != NULL;
+ 		     event = next_event) {
+ 			next_event = ISC_LIST_NEXT(event, ev_link);
+ 			if (event->fetch == fetch) {
+ 				ISC_LIST_UNLINK(fctx->events, event, ev_link);
+-				break;
+				switch (event->ev_type) {
+				case DNS_EVENT_TRYSTALE:
+					INSIST(event_trystale == NULL);
+					event_trystale = event;
+					break;
+				case DNS_EVENT_FETCHDONE:
+					INSIST(event_fetchdone == NULL);
+					event_fetchdone = event;
+					break;
+				default:
+					INSIST(0);
+				}
+				if (event_trystale != NULL &&
+				    event_fetchdone != NULL)
+				{
+					break;
+				}			
+ 			}
+ 		}
+ 	}
+-	if (event != NULL) {
+-		etask = event->ev_sender;
+-		event->ev_sender = fctx;
+-		event->result = ISC_R_CANCELED;
+-		isc_task_sendanddetach(&etask, ISC_EVENT_PTR(&event));
+	/*
+	 * The "trystale" event must be sent before the "fetchdone" event,
+	 * because the latter clears the "recursing" query attribute, which is
+	 * required by both events (handled by the same callback function).
+	 */
+	if (event_trystale != NULL) {
+		isc_task_t *etask = event_trystale->ev_sender;
+		event_trystale->ev_sender = fctx;
+		event_trystale->result = ISC_R_CANCELED;
+		isc_task_sendanddetach(&etask, ISC_EVENT_PTR(&event_trystale));
+ 	}
+	if (event_fetchdone != NULL) {
+		isc_task_t *etask = event_fetchdone->ev_sender;
+		event_fetchdone->ev_sender = fctx;
+		event_fetchdone->result = ISC_R_CANCELED;
+		isc_task_sendanddetach(&etask, ISC_EVENT_PTR(&event_fetchdone));
+        }
+
+ 	/*
+ 	 * The fctx continues running even if no fetches remain;
+ 	 * the answer is still cached.
+ 	 */
+-
+ 	UNLOCK(&res->buckets[fctx->bucketnum].lock);
+ }
+ 
+diff --git a/lib/ns/query.c b/lib/ns/query.c
+index 1944a0b..1444de5 100644
+--- a/lib/ns/query.c
+++ b/lib/ns/query.c
+@@ -6073,7 +6073,9 @@ fetch_callback(isc_task_t *task, isc_event_t *event) {
+ 	CTRACE(ISC_LOG_DEBUG(3), "fetch_callback");
+ 
+ 	if (event->ev_type == DNS_EVENT_TRYSTALE) {
+-		query_lookup_stale(client);
+		if (devent->result != ISC_R_CANCELED) {
+			query_lookup_stale(client);
+		}		
+ 		isc_event_free(ISC_EVENT_PTR(&event));
+ 		return;
+ 	}
+-- 
+2.33.0
+
--- a/bind.spec
+++ b/bind.spec
@ -30,7 +30,7 @@ Summary:  The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) serv
 Name:     bind
 License:  MPLv2.0
 Version:  9.16.23
-Release:  13
+Release:  14
 Epoch:    32
 Url:      https://www.isc.org/downloads/bind/
 #
@ -174,6 +174,12 @@ Patch6005:backport-CVE-2022-38178.patch
 Patch6006:backport-CVE-2022-2906.patch
 Patch6007:backport-CVE-2022-2881.patch

+Patch6096:backport-CVE-2022-3736.patch
+Patch6097:backport-CVE-2022-3924.patch
+Patch6098:backport-CVE-2022-3094-add-an-update-quota.patch
+Patch6099:backport-CVE-2022-3094-add-a-configuration-option-for-the-update-quota.patch
+Patch6100:backport-CVE-2022-3094-move-update-ACL-and-update-policy-checks-before-quota.patch
+
 Patch9000:bugfix-limit-numbers-of-test-threads.patch

 %{?systemd_ordering}
@ -1182,6 +1188,12 @@ fi;
 %endif

 %changelog
+* Fri Feb 03 2023 zhanghao<zhanghao383@huawei.com> - 32:9.16.23-14
+- Type:CVE
+- CVE:CVE-2022-3736 CVE-2022-3924 CVE-2022-3094
+- SUG:NA
+- DESC:fix CVE-2022-3736 CVE-2022-3924 CVE-2022-3094
+
 * Wed Dec 28 2022 huangyu <huangyu106@huawei.com> - 32:9.16.23-13
 - Type:bugfix
 - CVE:NA