gh-126455: Disallow _ssl.SSLSocket instantiation (#126481)

Prevent creation of incomplete/invalid _ssl.SSLSocket objects when
created directly.

diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 5223e21b5cdb11f99a71cd3f663a8e1ae49baa58..b6b5ebf094c938afb62fb0318301271a64897a1d 100644 (file)
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2979,7 +2979,7 @@ static PyType_Spec PySSLSocket_spec = {
     .name = "_ssl._SSLSocket",
     .basicsize = sizeof(PySSLSocket),
     .flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE |
-              Py_TPFLAGS_HAVE_GC),
+              Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_DISALLOW_INSTANTIATION),
     .slots = PySSLSocket_slots,
 };