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gh-111178: fix UBSan failures in Modules/_ssl.c #130719

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Merged
encukou merged 10 commits into from
Mar 17, 2025
Merged

gh-111178: fix UBSan failures in Modules/_ssl.c #130719

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801a41c
fix UBSan failures for `PySSLContext`
picnixz Feb 8, 2025
e1c5020
fix UBSan failures for `PySSLSocket`
picnixz Feb 8, 2025
e101a98
fix UBSan failures for `PySSLMemoryBIO`
picnixz Feb 8, 2025
d734c1e
fix UBSan failures for `PySSLSession`
picnixz Feb 8, 2025
fe9f918
Do not use `_` + capital letter in cast macros as it is also UB.
picnixz Feb 8, 2025
9a88242
Merge remote-tracking branch 'upstream/main' into fix/ubsan/ssl-111178
picnixz Mar 1, 2025
58d5d42
Merge remote-tracking branch 'upstream/main' into fix/ubsan/ssl-111178
picnixz Mar 1, 2025
62cfada
Assume (and then assert, a bit too late) that left is of the right type
encukou Mar 5, 2025
dc0a521
Victor's review (part 1)
picnixz Mar 16, 2025
9a4079c
Update Modules/_ssl.c
picnixz Mar 16, 2025
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fix UBSan failures for PySSLSocket
  • Loading branch information
@picnixz
picnixz committed Feb 8, 2025
commit e1c502056357e1845c5ac90370caec30d9d805d1
11 changes: 8 additions & 3 deletions Modules/_ssl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -339,6 +339,8 @@ typedef struct {
PyObject *exc;
} PySSLSocket;

#define PySSLSocket_CAST(op) ((PySSLSocket *)(op))

typedef struct {
PyObject_HEAD
BIO *bio;
Expand Down Expand Up @@ -2319,23 +2321,26 @@ _ssl__SSLSocket_owner_set_impl(PySSLSocket *self, PyObject *value)
}

static int
PySSL_traverse(PySSLSocket *self, visitproc visit, void *arg)
PySSL_traverse(PyObject *op, visitproc visit, void *arg)
{
PySSLSocket *self = PySSLSocket_CAST(op);
Py_VISIT(self->exc);
Py_VISIT(Py_TYPE(self));
return 0;
}

static int
PySSL_clear(PySSLSocket *self)
PySSL_clear(PyObject *op)
{
PySSLSocket *self = PySSLSocket_CAST(op);
Py_CLEAR(self->exc);
return 0;
}

static void
PySSL_dealloc(PySSLSocket *self)
PySSL_dealloc(PyObject *op)
{
PySSLSocket *self = PySSLSocket_CAST(op);
PyTypeObject *tp = Py_TYPE(self);
PyObject_GC_UnTrack(self);
if (self->ssl) {
Expand Down