@@ -38,6 +38,9 @@ Extension Modules
 Library
 -------
 
+- Bug #1501223: Possible overflow in _PySys_Init() when reading the code page
+  under Windows.
+
 - Patch #1478292. ``doctest.register_optionflag(name)`` shouldn't create a
   new flag when ``name`` is already the name of an option flag.
 
 
@@ -940,7 +940,7 @@ _PySys_Init(void)
 	PyObject *sysin, *sysout, *syserr;
 	char *s;
 #ifdef MS_WINDOWS
-	char buf[10];
+	char buf[13];
 #endif
 
 	m = Py_InitModule3("sys", sys_methods, sys_doc);