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bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects (#128)

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Xiang Zhang 2017-02-20 12:25:16 +08:00 • committed by GitHub
parent e395c4dbe1
commit d0e8212ed7
2 changed files with 5 additions and 0 deletions
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3
Misc/NEWS
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@ -10,6 +10,9 @@ What's New in Python 3.7.0 alpha 1?
Core and Builtins Core and Builtins
----------------- -----------------
- bpo-29347: Fixed possibly dereferencing undefined pointers
when creating weakref objects.
- bpo-29438: Fixed use-after-free problem in key sharing dict. - bpo-29438: Fixed use-after-free problem in key sharing dict.
- bpo-29546: Set the 'path' and 'name' attribute on ImportError for ``from ... import ...``. - bpo-29546: Set the 'path' and 'name' attribute on ImportError for ``from ... import ...``.

2
Objects/weakrefobject.c
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@ -24,6 +24,8 @@ init_weakref(PyWeakReference *self, PyObject *ob, PyObject *callback)
{ {
self->hash = -1; self->hash = -1;
self->wr_object = ob; self->wr_object = ob;
self->wr_prev = NULL;
self->wr_next = NULL;
Py_XINCREF(callback); Py_XINCREF(callback);
self->wr_callback = callback; self->wr_callback = callback;
} }