ext/pdo_mysql: mysql_handle_closer nullify some freed data.

devnexen · devnexen · commit f6989df8cc59 · 2023-03-25T17:41:21.000Z
Close GH-10926
diff --git a/ext/pdo_mysql/mysql_driver.c b/ext/pdo_mysql/mysql_driver.c
@@ -154,9 +154,11 @@ static void mysql_handle_closer(pdo_dbh_t *dbh)
 	if (H) {
 		if (H->server) {
 			mysql_close(H->server);
+			H->server = NULL;
 		}
 		if (H->einfo.errmsg) {
 			pefree(H->einfo.errmsg, dbh->is_persistent);
+			H->einfo.errmsg = NULL;
 		}
 		pefree(H, dbh->is_persistent);
 		dbh->driver_data = NULL;

Original file line number	Diff line number	Diff line change
`@@ -154,9 +154,11 @@ static void mysql_handle_closer(pdo_dbh_t *dbh)`
`154`	`154`	`if (H) {`
`155`	`155`	`if (H->server) {`
`156`	`156`	`mysql_close(H->server);`
	`157`	`+ H->server = NULL;`
`157`	`158`	`}`
`158`	`159`	`if (H->einfo.errmsg) {`
`159`	`160`	`pefree(H->einfo.errmsg, dbh->is_persistent);`
	`161`	`+ H->einfo.errmsg = NULL;`
`160`	`162`	`}`
`161`	`163`	`pefree(H, dbh->is_persistent);`
`162`	`164`	`dbh->driver_data = NULL;`