CVE-2022-29210

Advisory

TensorFlow is an open source platform for machine learning. In version 2.8.0, the 'TensorKey' hash function used total estimated 'AllocatedBytes()', which (a) is an estimate per tensor, and (b) is a very poor hash function for constants (e.g. 'int32_t'). It also tried to access individual tensor bytes through 'tensor.data()' of size 'AllocatedBytes()'. This led to ASAN failures because the 'AllocatedBytes()' is an estimate of total bytes allocated by a tensor, including any pointed-to constructs (e.g. strings), and does not refer to contiguous bytes in the '.data()' buffer. The discoverers could not use this byte vector anyway because types such as 'tstring' include pointers, whereas they needed to hash the string values themselves. This issue is patched in Tensorflow versions 2.9.0 and 2.8.1.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-29210
• https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/core/framework/tensor_key.h#L53-L64
• https://github.com/tensorflow/tensorflow/commit/1b85a28d395dc91f4d22b5f9e1e9a22e92ccecd6
• https://github.com/tensorflow/tensorflow/releases/tag/v2.8.1
• https://github.com/tensorflow/tensorflow/releases/tag/v2.9.0
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-hc2f-7r5r-r2hg