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gh-116180: Check the globals argument in PyRun_* C API (GH-116637)

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It used to crash when passing NULL or non-dict as globals.
Now it sets a SystemError.
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NGRsoftlab 2024-05-02 16:43:03 +03:00 • committed by GitHub
parent 7c97dc8c95
commit 7d2ffada0a
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2 changed files with 36 additions and 21 deletions
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21
Python/pythonrun.c
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@ -1275,17 +1275,20 @@ run_eval_code_obj(PyThreadState *tstate, PyCodeObject *co, PyObject *globals, Py
_PyRuntime.signals.unhandled_keyboard_interrupt = 0;
/* Set globals['__builtins__'] if it doesn't exist */
if (globals != NULL) {
int has_builtins = PyDict_ContainsString(globals, "__builtins__");
if (has_builtins < 0) {
if (!globals || !PyDict_Check(globals)) {
PyErr_SetString(PyExc_SystemError, "globals must be a real dict");
return NULL;
}
int has_builtins = PyDict_ContainsString(globals, "__builtins__");
if (has_builtins < 0) {
return NULL;
}
if (!has_builtins) {
if (PyDict_SetItemString(globals, "__builtins__",
tstate->interp->builtins) < 0)
{
return NULL;
}
if (!has_builtins) {
if (PyDict_SetItemString(globals, "__builtins__",
tstate->interp->builtins) < 0) {
return NULL;
}
}
}
v = PyEval_EvalCode((PyObject*)co, globals, locals);