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[3.9] gh-96577: Fixes buffer overrun in _msi module (GH-96633) #96657

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Merged
merged 1 commit into from
Oct 4, 2022
Merged

[3.9] gh-96577: Fixes buffer overrun in _msi module (GH-96633) #96657

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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Windows/2022-09-07-00-11-33.gh-issue-96577.kV4K_1.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fixes a potential buffer overrun in :mod:`msilib`.
4 changes: 2 additions & 2 deletions PC/_msi.c
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Expand Up @@ -292,7 +292,7 @@ msierror(int status)
int code;
char buf[2000];
char *res = buf;
DWORD size = sizeof(buf);
DWORD size = Py_ARRAY_LENGTH(buf);
MSIHANDLE err = MsiGetLastErrorRecord();

if (err == 0) {
Expand Down Expand Up @@ -386,7 +386,7 @@ record_getstring(msiobj* record, PyObject* args)
unsigned int status;
WCHAR buf[2000];
WCHAR *res = buf;
DWORD size = sizeof(buf);
DWORD size = Py_ARRAY_LENGTH(buf);
PyObject* string;

if (!PyArg_ParseTuple(args, "I:GetString", &field))
Expand Down