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fix UAFs in register_lazy_on_parent

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Bénédikt Tran 2025-12-07 11:36:30 +01:00 • committed by T. Wouters
parent 2a514d92a9
commit 74f35c42cb
1 changed files with 3 additions and 6 deletions
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9
Python/import.c
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@ -4283,8 +4283,7 @@ register_lazy_on_parent(PyThreadState *tstate, PyObject *name, PyObject *builtin
}
/* Add the lazy import for the child to the parent */
Py_XDECREF(parent_module);
parent_module = PyImport_GetModule(parent);
Py_XSETREF(parent_module, PyImport_GetModule(parent));
if (parent_module == NULL) {
if (PyErr_Occurred()) {
goto done;
@ -4310,8 +4309,7 @@ register_lazy_on_parent(PyThreadState *tstate, PyObject *name, PyObject *builtin
}
Py_DECREF(lazy_submodules);
} else {
Py_XDECREF(parent_dict);
parent_dict = get_mod_dict(parent_module);
Py_XSETREF(parent_dict, get_mod_dict(parent_module));
if (parent_dict == NULL) {
goto done;
}
@ -4334,8 +4332,7 @@ register_lazy_on_parent(PyThreadState *tstate, PyObject *name, PyObject *builtin
}
}
Py_DECREF(name);
name = parent;
Py_SETREF(name, parent);
parent = NULL;
}