diff --git a/apps/app_mixmonitor.c b/apps/app_mixmonitor.c
index b1579a70ac..9f147768dd 100644
--- a/apps/app_mixmonitor.c
+++ b/apps/app_mixmonitor.c
@@ -818,6 +818,8 @@ static int setup_mixmonitor_ds(struct mixmonitor *mixmonitor, struct ast_channel
 
 	if (ast_asprintf(datastore_id, "%p", mixmonitor_ds) == -1) {
 		ast_log(LOG_ERROR, "Failed to allocate memory for MixMonitor ID.\n");
+		ast_free(mixmonitor_ds);
+		return -1;
 	}
 
 	ast_mutex_init(&mixmonitor_ds->lock);
diff --git a/include/asterisk/utils.h b/include/asterisk/utils.h
index 4a5dbf282c..03705b321a 100644
--- a/include/asterisk/utils.h
+++ b/include/asterisk/utils.h
@@ -721,7 +721,13 @@ int _ast_vasprintf(char **ret, const char *file, int lineno, const char *func, c
 
 	DEBUG_CHAOS_RETURN(DEBUG_CHAOS_ALLOC_CHANCE, -1);
 
-	if ((res = vasprintf(ret, fmt, ap)) == -1) {
+	res = vasprintf(ret, fmt, ap);
+	if (res < 0) {
+		/*
+		 * *ret is undefined so set to NULL to ensure it is
+		 * initialized to something useful.
+		 */
+		*ret = NULL;
 		MALLOC_FAILURE_MSG;
 	}
 
diff --git a/main/db.c b/main/db.c
index 4bb9355c66..ab5f7a07c2 100644
--- a/main/db.c
+++ b/main/db.c
@@ -193,9 +193,11 @@ static int convert_bdb_to_sqlite3(void)
 	char *cmd;
 	int res;
 
-	ast_asprintf(&cmd, "%s/astdb2sqlite3 '%s'\n", ast_config_AST_SBIN_DIR, ast_config_AST_DB);
-	res = ast_safe_system(cmd);
-	ast_free(cmd);
+	res = ast_asprintf(&cmd, "%s/astdb2sqlite3 '%s'\n", ast_config_AST_SBIN_DIR, ast_config_AST_DB);
+	if (0 <= res) {
+		res = ast_safe_system(cmd);
+		ast_free(cmd);
+	}
 
 	return res;
 }
diff --git a/main/json.c b/main/json.c
index f45d585c1f..057a262125 100644
--- a/main/json.c
+++ b/main/json.c
@@ -462,7 +462,7 @@ struct ast_json *ast_json_vstringf(const char *format, va_list args)
 
 	if (format) {
 		int err = ast_vasprintf(&str, format, args);
-		if (err > 0) {
+		if (err >= 0) {
 			ret = json_string(str);
 			ast_free(str);
 		}
diff --git a/main/stasis.c b/main/stasis.c
index 48e4eb5a55..2d99805170 100644
--- a/main/stasis.c
+++ b/main/stasis.c
@@ -1344,7 +1344,7 @@ static struct ast_str *multi_object_blob_to_ami(void *obj)
 
 	for (type = 0; type < STASIS_UMOS_MAX; ++type) {
 		for (i = 0; i < AST_VECTOR_SIZE(&multi->snapshots[type]); ++i) {
-			char *name = "";
+			char *name = NULL;
 			void *snapshot = AST_VECTOR_GET(&multi->snapshots[type], i);
 			ami_snapshot = NULL;
 
@@ -1354,11 +1354,11 @@ static struct ast_str *multi_object_blob_to_ami(void *obj)
 
 			switch (type) {
 			case STASIS_UMOS_CHANNEL:
-				ami_snapshot = ast_manager_build_channel_state_string_prefix(snapshot, name);
+				ami_snapshot = ast_manager_build_channel_state_string_prefix(snapshot, name ?: "");
 				break;
 
 			case STASIS_UMOS_BRIDGE:
-				ami_snapshot = ast_manager_build_bridge_state_string_prefix(snapshot, name);
+				ami_snapshot = ast_manager_build_bridge_state_string_prefix(snapshot, name ?: "");
 				break;
 
 			case STASIS_UMOS_ENDPOINT:
@@ -1369,6 +1369,7 @@ static struct ast_str *multi_object_blob_to_ami(void *obj)
 				ast_str_append(&ami_str, 0, "%s", ast_str_buffer(ami_snapshot));
 				ast_free(ami_snapshot);
 			}
+			ast_free(name);
 		}
 	}
 
diff --git a/main/utils.c b/main/utils.c
index 0824a373a5..0342030460 100644
--- a/main/utils.c
+++ b/main/utils.c
@@ -2389,7 +2389,13 @@ int _ast_asprintf(char **ret, const char *file, int lineno, const char *func, co
 	va_list ap;
 
 	va_start(ap, fmt);
-	if ((res = vasprintf(ret, fmt, ap)) == -1) {
+	res = vasprintf(ret, fmt, ap);
+	if (res < 0) {
+		/*
+		 * *ret is undefined so set to NULL to ensure it is
+		 * initialized to something useful.
+		 */
+		*ret = NULL;
 		MALLOC_FAILURE_MSG;
 	}
 	va_end(ap);
diff --git a/res/ari/resource_bridges.c b/res/ari/resource_bridges.c
index 8c058c4a7b..d6a0400c86 100644
--- a/res/ari/resource_bridges.c
+++ b/res/ari/resource_bridges.c
@@ -387,7 +387,6 @@ static int ari_bridges_play_helper(const char *args_media,
 
 	if (ast_asprintf(playback_url, "/playbacks/%s",
 			stasis_app_playback_get_id(playback)) == -1) {
-		playback_url = NULL;
 		ast_ari_response_alloc_failed(response);
 		return -1;
 	}
diff --git a/res/res_xmpp.c b/res/res_xmpp.c
index 6ba4014c70..1b0ae427bc 100644
--- a/res/res_xmpp.c
+++ b/res/res_xmpp.c
@@ -3911,8 +3911,11 @@ static int fetch_access_token(struct ast_xmpp_client_config *cfg)
 	struct ast_json_error error;
 	RAII_VAR(struct ast_json *, jobj, NULL, ast_json_unref);
 
-	ast_asprintf(&cmd, "CURL(%s,client_id=%s&client_secret=%s&refresh_token=%s&grant_type=refresh_token)",
-		     url, cfg->oauth_clientid, cfg->oauth_secret, cfg->refresh_token);
+	if (ast_asprintf(&cmd,
+		"CURL(%s,client_id=%s&client_secret=%s&refresh_token=%s&grant_type=refresh_token)",
+		url, cfg->oauth_clientid, cfg->oauth_secret, cfg->refresh_token) < 0) {
+		return -1;
+	}
 
 	ast_debug(2, "Performing OAuth 2.0 authentication for client '%s' using command: %s\n",
 		cfg->name, cmd);