From 925ada52de7923bf2ef5ea064e58b463dc2e3d7d Mon Sep 17 00:00:00 2001
From: dyupina <dyupina_alex@mail.ru>
Date: Thu, 13 Mar 2025 17:44:16 +0300
Subject: [PATCH] fix possible NULL pointer dereference

---
 Modules/_ctypes/_ctypes.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 96a057554960e2..d3b496887b5692 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -2826,6 +2826,7 @@ PyCData_NewGetBuffer(PyObject *myself, Py_buffer *view, int flags)
     StgDictObject *item_dict = PyType_stgdict(item_type);
 
     if (view == NULL) return 0;
+    assert(dict);
 
     view->buf = self->b_ptr;
     view->obj = Py_NewRef(myself);
@@ -2862,7 +2863,10 @@ PyCData_reduce(PyObject *myself, PyObject *args)
 {
     CDataObject *self = (CDataObject *)myself;
 
-    if (PyObject_stgdict(myself)->flags & (TYPEFLAG_ISPOINTER|TYPEFLAG_HASPOINTER)) {
+    StgDictObject *stgdict = PyObject_stgdict(myself);
+    assert(stgdict);
+
+    if (stgdict->flags & (TYPEFLAG_ISPOINTER|TYPEFLAG_HASPOINTER)) {
         PyErr_SetString(PyExc_ValueError,
                         "ctypes objects containing pointers cannot be pickled");
         return NULL;