strengthen the protection of strlen

when using flash's mmap method to access json strings, can strengthen the protection of strlen when flash data is all 0xff
DaveGamble · Jan 2, 2025 · 5c21105 · 5c21105
1 parent 12c4bf1
commit 5c21105
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cJSON.c b/cJSON.c
@@ -1100,7 +1100,7 @@ CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return
 {
     size_t buffer_length;
 
-    if (NULL == value)
+    if (NULL == value || (*value != '[' && *value != '{'))
     {
         return NULL;
     }