Fix use-after-free in set_container_tags_hash test function

bwoebi · amarziali · commit 1c2af13f9304 · 2026-06-05T16:49:30.000+02:00
diff --git a/tracer/functions.c b/tracer/functions.c
@@ -1996,7 +1996,9 @@ PHP_FUNCTION(dd_trace_internal_fn) {
         } else if (params_count == 1 && FUNCTION_NAME_MATCHES("set_container_tags_hash")) {
             zval *container_tags_hash = ZVAL_VARARG_PARAM(params, 0);
             if (Z_TYPE_P(container_tags_hash) == IS_STRING) {
-                datadog_process_tags_set_container_tags_hash(Z_STR_P(container_tags_hash));
+                zend_string *hash = zend_string_dup(Z_STR_P(container_tags_hash), 1);
+                datadog_process_tags_set_container_tags_hash(hash);
+                zend_string_release(hash);
                 RETVAL_TRUE;
             } else {
                 RETVAL_FALSE;
