From d0e8212ed70445cc3d48b0d4ae7c9cb480004010 Mon Sep 17 00:00:00 2001 From: Xiang Zhang Date: Mon, 20 Feb 2017 12:25:16 +0800 Subject: bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects (#128) --- Misc/NEWS | 3 +++ Objects/weakrefobject.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/Misc/NEWS b/Misc/NEWS index 752ce05..0c2a573 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -10,6 +10,9 @@ What's New in Python 3.7.0 alpha 1? 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-29546: Set the 'path' and 'name' attribute on ImportError for ``from ... import ...``. diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c index d12db91..da05950 100644 --- a/Objects/weakrefobject.c +++ b/Objects/weakrefobject.c @@ -24,6 +24,8 @@ init_weakref(PyWeakReference *self, PyObject *ob, PyObject *callback) { self->hash = -1; self->wr_object = ob; + self->wr_prev = NULL; + self->wr_next = NULL; Py_XINCREF(callback); self->wr_callback = callback; } -- cgit v0.12