From 7131a73f9655cfd325c798385905326f57b94640 Mon Sep 17 00:00:00 2001 From: Xiang Zhang Date: Mon, 20 Feb 2017 14:32:53 +0800 Subject: [PATCH] bpo-29347: Fix possibly dereferencing undefined pointers when creating weakref objects (#128) (#187) --- Misc/NEWS | 3 +++ Objects/weakrefobject.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/Misc/NEWS b/Misc/NEWS index f0ba8c6213..8726996a4b 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -10,6 +10,9 @@ What's New in Python 2.7.14? Core and Builtins ----------------- +- bpo-29347: Fixed possibly dereferencing undefined pointers + when creating weakref objects. + - Issue #14376: Allow sys.exit to accept longs as well as ints. Patch by Gareth Rees. diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c index c8b982fcd5..2eb4fe0b17 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; } -- 2.50.1