From 7e67474ed62fb90ffbfa529440e06e0ac418697c Mon Sep 17 00:00:00 2001 From: Xiang Zhang Date: Mon, 20 Feb 2017 12:25:16 +0800 Subject: [PATCH] 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 c750d5c952e6e9..52c87d88c72664 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -10,6 +10,9 @@ Release date: XXXX-XX-XX 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. - Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0]. diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c index 7e6f36458bc693..892798affe9fe2 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; } pFad - Phonifier reborn

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