pythoncapi
diff --git a/‎Misc/NEWS.d/next/Library/2023-07-03-03-46-20.gh-issue-106350.LLcTEe.rst‎
Lines changed: 2 additions & 0 deletions b/‎Misc/NEWS.d/next/Library/2023-07-03-03-46-20.gh-issue-106350.LLcTEe.rst‎
Lines changed: 2 additions & 0 deletions
diff --git a/‎Modules/_tkinter.c‎
Lines changed: 3 additions & 2 deletions b/‎Modules/_tkinter.c‎
Lines changed: 3 additions & 2 deletions
@@ -0,0 +1,2 @@
+Detect possible memory allocation failure in the libtommath function :c:func:`mp_init`
+used by the ``_tkinter`` module.
@@ -874,8 +874,9 @@ asBignumObj(PyObject *value)
         return NULL;
     }
     hexchars += neg + 2; /* skip sign and "0x" */
-    mp_init(&bigValue);
-    if (mp_read_radix(&bigValue, hexchars, 16) != MP_OKAY) {
+    if (mp_init(&bigValue) != MP_OKAY ||
+        mp_read_radix(&bigValue, hexchars, 16) != MP_OKAY)
+    {
         mp_clear(&bigValue);
         Py_DECREF(hexstr);
         PyErr_NoMemory();
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Detect possible memory allocation failure in the libtommath function :c:func:`mp_init`
	`2`	+used by the ``_tkinter`` module.