STINNER Victor <[email protected]> added the comment:
I asked if there is an issue. In fact, all Python memory allocators start by
checking if the size is larger than PY_SSIZE_T_MAX. Example:
void *
PyMem_RawMalloc(size_t size)
{
/*
* Limit ourselves to PY_SSIZE_T_MAX bytes to prevent security holes.
* Most python internals blindly use a signed Py_ssize_t to track
* things without checking for overflows or negatives.
* As size_t is unsigned, checking for size < 0 is not required.
*/
if (size > (size_t)PY_SSIZE_T_MAX)
return NULL;
return _PyMem_Raw.malloc(_PyMem_Raw.ctx, size);
}
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<https://bugs.python.org/issue1621>
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