// following maps the operation name to the indices at which the corresponding
// gradient function can accept None values. e.g. FusedBatchNorm outputs 5
// values and hence receives 5 gradient values during backprop. However the
// gradient function uses only the first of those values and ignores the rest.
// The entry, "FusedBatchNorm": [1, 2, 3, 4], indicates that only the gradient
// corresponding to index 0 is used, and the gradient values at indices 1-4 are

*   Fixes a vulnerability due to use of uninitialized value in Tensorflow
    ([CVE-2021-41225](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41225))
*   Fixes a heap OOB in `FusedBatchNorm` kernels
    ([CVE-2021-41223](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41223))
*   Fixes an arbitrary memory read in `ImmutableConst`