From: Yongtao Huang Date: Thu, 25 Dec 2025 14:24:25 +0000 (+0800) Subject: gh-143145: Fix possible reference leak in ctypes _build_result() (GH-143131) X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=579c5b496b467a2b175cb30caa4f6873cb13c9a1;p=thirdparty%2FPython%2Fcpython.git gh-143145: Fix possible reference leak in ctypes _build_result() (GH-143131) The result tuple was leaked if __ctypes_from_outparam__() failed for any item. Signed-off-by: Yongtao Huang --- diff --git a/Misc/NEWS.d/next/Library/2025-12-24-14-18-52.gh-issue-143145.eXLw8D.rst b/Misc/NEWS.d/next/Library/2025-12-24-14-18-52.gh-issue-143145.eXLw8D.rst new file mode 100644 index 000000000000..2aff1090b181 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2025-12-24-14-18-52.gh-issue-143145.eXLw8D.rst @@ -0,0 +1 @@ +Fixed a possible reference leak in ctypes when constructing results with multiple output parameters on error. diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c index 774ac71ce9ec..563e95a76259 100644 --- a/Modules/_ctypes/_ctypes.c +++ b/Modules/_ctypes/_ctypes.c @@ -4557,6 +4557,7 @@ _build_result(PyObject *result, PyObject *callargs, v = PyTuple_GET_ITEM(callargs, i); v = PyObject_CallMethodNoArgs(v, &_Py_ID(__ctypes_from_outparam__)); if (v == NULL || numretvals == 1) { + Py_XDECREF(tup); Py_DECREF(callargs); return v; }