1 files changed, 61 insertions, 0 deletions
diff --git a/main/mosquitto/CVE-2021-34432.patch b/main/mosquitto/CVE-2021-34432.patch
new file mode 100644
index 00000000000..14037ba13c7
--- /dev/null
+++ b/main/mosquitto/CVE-2021-34432.patch
@@ -0,0 +1,61 @@
+From 9b08faf0bdaf5a4f2e6e3dd1ea7e8c57f70418d6 Mon Sep 17 00:00:00 2001
+From: "Roger A. Light" <roger@atchoo.org>
+Date: Tue, 9 Feb 2021 14:09:53 +0000
+Subject: [PATCH] Fix mosquitto_{pub|sub}_topic_check() function returns.
+
+The would not return MOSQ_ERR_INVAL on topic == NULL.
+---
+ lib/util_topic.c | 19 ++++++++++++++++---
+ 2 files changed, 21 insertions(+), 3 deletions(-)
+
+diff --git a/lib/util_topic.c b/lib/util_topic.c
+index fc24f0d1cb..62b531127c 100644
+--- a/lib/util_topic.c
++++ b/lib/util_topic.c
+@@ -54,6 +54,11 @@ int mosquitto_pub_topic_check(const char *str)
+ #ifdef WITH_BROKER
+ 	int hier_count = 0;
+ #endif
++
++	if(str == NULL){
++		return MOSQ_ERR_INVAL;
++	}
++
+ 	while(str && str[0]){
+ 		if(str[0] == '+' || str[0] == '#'){
+ 			return MOSQ_ERR_INVAL;
+@@ -81,7 +86,9 @@ int mosquitto_pub_topic_check2(const char *str, size_t len)
+ 	int hier_count = 0;
+ #endif
+ 
+-	if(len > 65535) return MOSQ_ERR_INVAL;
++	if(str == NULL || len > 65535){
++		return MOSQ_ERR_INVAL;
++	}
+ 
+ 	for(i=0; i<len; i++){
+ 		if(str[i] == '+' || str[i] == '#'){
+@@ -115,7 +122,11 @@ int mosquitto_sub_topic_check(const char *str)
+ 	int hier_count = 0;
+ #endif
+ 
+-	while(str && str[0]){
++	if(str == NULL){
++		return MOSQ_ERR_INVAL;
++	}
++
++	while(str[0]){
+ 		if(str[0] == '+'){
+ 			if((c != '\0' && c != '/') || (str[1] != '\0' && str[1] != '/')){
+ 				return MOSQ_ERR_INVAL;
+@@ -150,7 +161,9 @@ int mosquitto_sub_topic_check2(const char *str, size_t len)
+ 	int hier_count = 0;
+ #endif
+ 
+-	if(len > 65535) return MOSQ_ERR_INVAL;
++	if(str == NULL || len > 65535){
++		return MOSQ_ERR_INVAL;
++	}
+ 
+ 	for(i=0; i<len; i++){
+ 		if(str[i] == '+'){