CVE-2021-29575
Description
TensorFlow is an end-to-end open source platform for machine learning. The implementation of `tf.raw_ops.ReverseSequence` allows for stack overflow and/or `CHECK`-fail based denial of service. The implementation(https://github.com/tensorflow/tensorflow/blob/5b3b071975e01f0d250c928b2a8f901cd53b90a7/tensorflow/core/kernels/reverse_sequence_op.cc#L114-L118) fails to validate that `seq_dim` and `batch_dim` arguments are valid. Negative values for `seq_dim` can result in stack overflow or `CHECK`-failure, depending on the version of Eigen code used to implement the operation. Similar behavior can be exhibited by invalid values of `batch_dim`. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
How to fix
- google tensorflow2.2.3, 2.3.3, 2.4.2 or later
- tensorflow2.1.4, 2.2.3, 2.3.3, 2.4.2, 2.2.0rc0 or later
- tensorflow-cpu2.1.4, 2.2.3, 2.3.3, 2.4.2, 2.2.0rc0 or later
- tensorflow-gpu2.1.4, 2.2.3, 2.3.3, 2.4.2, 2.2.0rc0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| google tensorflow | v ≤ 2.1.4, 2.2.0 ≤ v < 2.2.3, 2.3.0 ≤ v < 2.3.3, 2.4.0 ≤ v < 2.4.2 | 2.2.3, 2.3.3, 2.4.2 |
| tensorflowPyPI | v < 2.1.4, 2.2.0 ≤ v < 2.2.3, 2.3.0 ≤ v < 2.3.3, 2.4.0 ≤ v < 2.4.2, v < 2.2.0rc0 | 2.1.4, 2.2.3, 2.3.3, 2.4.2, 2.2.0rc0 |
| tensorflow-cpuPyPI | v < 2.1.4, 2.2.0 ≤ v < 2.2.3, 2.3.0 ≤ v < 2.3.3, 2.4.0 ≤ v < 2.4.2, v < 2.2.0rc0 | 2.1.4, 2.2.3, 2.3.3, 2.4.2, 2.2.0rc0 |
| tensorflow-gpuPyPI | v < 2.1.4, 2.2.0 ≤ v < 2.2.3, 2.3.0 ≤ v < 2.3.3, 2.4.0 ≤ v < 2.4.2, v < 2.2.0rc0 | 2.1.4, 2.2.3, 2.3.3, 2.4.2, 2.2.0rc0 |
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