cachedb_mongodb: Fix possible crash in counter add/sub

OpenSIPS · Feb 7, 2018 · 8345ff2 · 8345ff2
1 parent d6933ad
commit 8345ff2
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/modules/cachedb_mongodb/cachedb_mongodb_dbase.c b/modules/cachedb_mongodb/cachedb_mongodb_dbase.c
@@ -967,6 +967,9 @@ int mongo_con_add(cachedb_con *con, str *attr, int val, int expires, int *new_va
 	stop_expire_timer(start, mongo_exec_threshold, "MongoDB counter add",
 	                  NULL, 0, 0);
 
+	if (!new_val)
+		goto out;
+
 	if (bson_iter_init_find(&iter, &reply, "value") &&
 	    BSON_ITER_HOLDS_DOCUMENT(&iter) &&
 	    bson_iter_recurse(&iter, &sub_iter)) {