From 10268ac8797668c9618c66b1cc2239095b543a69 Mon Sep 17 00:00:00 2001
From: An Long <aisk1988@gmail.com>
Date: Mon, 6 Jul 2026 23:49:01 +0900
Subject: [PATCH 1/2] Set MemoryError in stackref array conversion

---
 Python/ceval.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Python/ceval.c b/Python/ceval.c
index f3f03b28112137..3f636c3416e120 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1056,6 +1056,7 @@ _PyObjectArray_FromStackRefArray(_PyStackRef *input, Py_ssize_t nargs, PyObject
         // +1 in case PY_VECTORCALL_ARGUMENTS_OFFSET is set.
         result = PyMem_Malloc((nargs + 1) * sizeof(PyObject *));
         if (result == NULL) {
+            PyErr_NoMemory();
             return NULL;
         }
     }

From ae062110b3c70714c3f88b2072abd232ae702a00 Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Tue, 7 Jul 2026 04:17:00 +0000
Subject: [PATCH 2/2] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../2026-07-07-04-16-48.gh-issue-153205.5fE8QZ.rst              | 2 ++
 1 file changed, 2 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Core_and_Builtins/2026-07-07-04-16-48.gh-issue-153205.5fE8QZ.rst

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2026-07-07-04-16-48.gh-issue-153205.5fE8QZ.rst b/Misc/NEWS.d/next/Core_and_Builtins/2026-07-07-04-16-48.gh-issue-153205.5fE8QZ.rst
new file mode 100644
index 00000000000000..3cfcf80d275a8e
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2026-07-07-04-16-48.gh-issue-153205.5fE8QZ.rst
@@ -0,0 +1,2 @@
+Fix a potential :exc:SystemError during vector calls when memory allocation fails.
+A :exc:MemoryError is now raised instead.