CVSS: 7.7EPSS: 0%CPEs: 6EXPL: 0CVE-2021-37647 – Null pointer dereference in `SparseTensorSliceDataset` in TensorFlow
https://notcve.org/view.php?id=CVE-2021-37647
TensorFlow is an end-to-end open source platform for machine learning. When a user does not supply arguments that determine a valid sparse tensor, `tf.raw_ops.SparseTensorSliceDataset` implementation can be made to dereference a null pointer. The [implementation](https://github.com/tensorflow/tensorflow/blob/8d72537c6abf5a44103b57b9c2e22c14f5f49698/tensorflow/core/kernels/data/sparse_tensor_slice_dataset_op.cc#L240-L251) has some argument validation but fails to consider the case when either `indices` or `values` are provided for an empty sparse tensor when the other is not. If `indices` is empty, then [code that performs validation](https://github.com/tensorflow/tensorflow/blob/8d72537c6abf5a44103b57b9c2e22c14f5f49698/tensorflow/core/kernels/data/sparse_tensor_slice_dataset_op.cc#L260-L261) (i.e., checking that the indices are monotonically increasing) results in a null pointer dereference. If `indices` as provided by the user is empty, then `indices` in the C++ code above is backed by an empty `std::vector`, hence calling `indices->dim_size(0)` results in null pointer dereferencing (same as calling `std::vector::at()` on an empty vector). • https://github.com/tensorflow/tensorflow/commit/02cc160e29d20631de3859c6653184e3f876b9d7 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-c5x2-p679-95wc • CWE-476: NULL Pointer Dereference •
CVSS: 7.7EPSS: 0%CPEs: 6EXPL: 0CVE-2021-37643 – Null pointer dereference in `MatrixDiagPartOp` in TensorFlow
https://notcve.org/view.php?id=CVE-2021-37643
TensorFlow is an end-to-end open source platform for machine learning. If a user does not provide a valid padding value to `tf.raw_ops.MatrixDiagPartOp`, then the code triggers a null pointer dereference (if input is empty) or produces invalid behavior, ignoring all values after the first. The [implementation](https://github.com/tensorflow/tensorflow/blob/8d72537c6abf5a44103b57b9c2e22c14f5f49698/tensorflow/core/kernels/linalg/matrix_diag_op.cc#L89) reads the first value from a tensor buffer without first checking that the tensor has values to read from. We have patched the issue in GitHub commit 482da92095c4d48f8784b1f00dda4f81c28d2988. The fix will be included in TensorFlow 2.6.0. • https://github.com/tensorflow/tensorflow/commit/482da92095c4d48f8784b1f00dda4f81c28d2988 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-fcwc-p4fc-c5cc • CWE-476: NULL Pointer Dereference •
CVSS: 8.4EPSS: 0%CPEs: 6EXPL: 0CVE-2021-37639 – Null pointer dereference and heap OOB read in TensorFlow
https://notcve.org/view.php?id=CVE-2021-37639
TensorFlow is an end-to-end open source platform for machine learning. When restoring tensors via raw APIs, if the tensor name is not provided, TensorFlow can be tricked into dereferencing a null pointer. Alternatively, attackers can read memory outside the bounds of heap allocated data by providing some tensor names but not enough for a successful restoration. The [implementation](https://github.com/tensorflow/tensorflow/blob/47a06f40411a69c99f381495f490536972152ac0/tensorflow/core/kernels/save_restore_tensor.cc#L158-L159) retrieves the tensor list corresponding to the `tensor_name` user controlled input and immediately retrieves the tensor at the restoration index (controlled via `preferred_shard` argument). This occurs without validating that the provided list has enough values. • https://github.com/tensorflow/tensorflow/commit/9e82dce6e6bd1f36a57e08fa85af213e2b2f2622 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-gh6x-4whr-2qv4 • CWE-125: Out-of-bounds Read CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 0CVE-2021-37638 – Null pointer dereference in `RaggedTensorToTensor` in TensorFlow
https://notcve.org/view.php?id=CVE-2021-37638
TensorFlow is an end-to-end open source platform for machine learning. Sending invalid argument for `row_partition_types` of `tf.raw_ops.RaggedTensorToTensor` API results in a null pointer dereference and undefined behavior. The [implementation](https://github.com/tensorflow/tensorflow/blob/47a06f40411a69c99f381495f490536972152ac0/tensorflow/core/kernels/ragged_tensor_to_tensor_op.cc#L328) accesses the first element of a user supplied list of values without validating that the provided list is not empty. We have patched the issue in GitHub commit 301ae88b331d37a2a16159b65b255f4f9eb39314. The fix will be included in TensorFlow 2.6.0. • https://github.com/tensorflow/tensorflow/commit/301ae88b331d37a2a16159b65b255f4f9eb39314 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-hwr7-8gxx-fj5p • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 6EXPL: 0CVE-2021-37660 – Division by 0 in inplace operations in TensorFlow
https://notcve.org/view.php?id=CVE-2021-37660
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can cause a floating point exception by calling inplace operations with crafted arguments that would result in a division by 0. The [implementation](https://github.com/tensorflow/tensorflow/blob/84d053187cb80d975ef2b9684d4b61981bca0c41/tensorflow/core/kernels/inplace_ops.cc#L283) has a logic error: it should skip processing if `x` and `v` are empty but the code uses `||` instead of `&&`. We have patched the issue in GitHub commit e86605c0a336c088b638da02135ea6f9f6753618. The fix will be included in TensorFlow 2.6.0. • https://github.com/tensorflow/tensorflow/commit/e86605c0a336c088b638da02135ea6f9f6753618 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-cm5x-837x-jf3c • CWE-369: Divide By Zero •