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Avoid division by zero

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hugovk 2017-02-22 08:28:20 +02:00
parent 0764b2b5e9
commit a662443b7f
1 changed files with 2 additions and 2 deletions
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4
map.c
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@ -342,7 +342,7 @@ PyImaging_MapBuffer(PyObject* self, PyObject* args)
stride = xsize * 4; stride = xsize * 4;
} }
if (ysize > INT_MAX / stride) { if (stride > 0 && ysize > INT_MAX / stride) {
PyErr_SetString(PyExc_MemoryError, "Integer overflow in ysize"); PyErr_SetString(PyExc_MemoryError, "Integer overflow in ysize");
return NULL; return NULL;
} }
@ -352,7 +352,7 @@ PyImaging_MapBuffer(PyObject* self, PyObject* args)
if (offset > PY_SSIZE_T_MAX - size) { if (offset > PY_SSIZE_T_MAX - size) {
PyErr_SetString(PyExc_MemoryError, "Integer overflow in offset"); PyErr_SetString(PyExc_MemoryError, "Integer overflow in offset");
return NULL; return NULL;
} }
/* check buffer size */ /* check buffer size */
if (PyImaging_GetBuffer(target, &view) < 0) if (PyImaging_GetBuffer(target, &view) < 0)