Fixed memory corruption due to invalid free of 'qi->stmt_info->query' #3427

5 years ago · 65e8caf9b6
parent a5208f62b7
commit 65e8caf9b6
1 changed files with 3 additions and 1 deletions
--- a/lib/Query_Processor.cpp
+++ b/lib/Query_Processor.cpp
@ -1710,7 +1710,9 @@ __exit_process_mysql_query:
 	if (len < stackbuffer_size) {
 		// query is in the stack
 	} else {
-		l_free(len+1,query);
+		if (ptr) {
+			l_free(len+1,query);
+		}
 	}
 	if (sess->mirror==false) { // we process comments only on original queries, not on mirrors
 		if (qp && qp->first_comment) {