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gh-140398: fix memory leaks in readline module when PySys_Audit fails (#140400)

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Shamil 2025-10-21 10:54:34 +03:00 • committed by GitHub
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commit e8e0f411ba
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4
Misc/NEWS.d/next/Core_and_Builtins/2025-10-21-09-20-03.gh-issue-140398.SoABwJ.rst Normal file
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@ -0,0 +1,4 @@
Fix memory leaks in :mod:`readline` functions
:func:`~readline.read_init_file`, :func:`~readline.read_history_file`,
:func:`~readline.write_history_file`, and
:func:`~readline.append_history_file` when :c:func:`PySys_Audit` fails.

4
Modules/readline.c
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@ -255,6 +255,7 @@ readline_read_init_file_impl(PyObject *module, PyObject *filename_obj)
if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))
return NULL;
if (PySys_Audit("open", "OCi", filename_obj, 'r', 0) < 0) {
Py_DECREF(filename_bytes);
return NULL;
}
errno = rl_read_init_file(PyBytes_AS_STRING(filename_bytes));
@ -298,6 +299,7 @@ readline_read_history_file_impl(PyObject *module, PyObject *filename_obj)
if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))
return NULL;
if (PySys_Audit("open", "OCi", filename_obj, 'r', 0) < 0) {
Py_DECREF(filename_bytes);
return NULL;
}
errno = read_history(PyBytes_AS_STRING(filename_bytes));
@ -343,6 +345,7 @@ readline_write_history_file_impl(PyObject *module, PyObject *filename_obj)
return NULL;
filename = PyBytes_AS_STRING(filename_bytes);
if (PySys_Audit("open", "OCi", filename_obj, 'w', 0) < 0) {
Py_DECREF(filename_bytes);
return NULL;
}
} else {
@ -400,6 +403,7 @@ readline_append_history_file_impl(PyObject *module, int nelements,
return NULL;
filename = PyBytes_AS_STRING(filename_bytes);
if (PySys_Audit("open", "OCi", filename_obj, 'a', 0) < 0) {
Py_DECREF(filename_bytes);
return NULL;
}
} else {