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bpo-45329: Fix freed memory access in pyexpat.c (GH-28649)

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TAGAMI Yukihiro 2021-10-02 18:57:13 +09:00 committed by GitHub
parent 417faa69bd
commit 0742abdc48
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2 changed files with 3 additions and 1 deletions
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2
Misc/NEWS.d/next/Library/2021-10-01-13-09-53.bpo-45329.9iMYaO.rst Normal file
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@ -0,0 +1,2 @@
Fix freed memory access in :class:`pyexpat.xmlparser` when building it with an
installed expat library <= 2.2.0.

2
Modules/pyexpat.c
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@ -1204,10 +1204,10 @@ static void
xmlparse_dealloc(xmlparseobject *self)
{
PyObject_GC_UnTrack(self);
(void)xmlparse_clear(self);
if (self->itself != NULL)
XML_ParserFree(self->itself);
self->itself = NULL;
(void)xmlparse_clear(self);
if (self->handlers != NULL) {
PyMem_Free(self->handlers);