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Fix #8105. Add validation to mmap.mmap so invalid file descriptors

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don't cause a crash on Windows.
This commit is contained in:
Brian Curtin 2010-08-01 15:26:26 +00:00
parent 0bccc185b4
commit ea47eaa395
3 changed files with 19 additions and 1 deletions
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5
Modules/mmapmodule.c
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@ -1236,6 +1236,11 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict)
1);
*/
if (fileno != -1 && fileno != 0) {
/* Ensure that fileno is within the CRT's valid range */
if (_PyVerify_fd(fileno) == 0) {
PyErr_SetFromErrno(mmap_module_error);
return NULL;
}
fh = (HANDLE)_get_osfhandle(fileno);
if (fh==(HANDLE)-1) {
PyErr_SetFromErrno(mmap_module_error);