{"id":"BIT-tensorflow-2022-29210","summary":"Heap buffer overflow due to incorrect hash function in TensorFlow","details":"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.","aliases":["CVE-2022-29210","GHSA-hc2f-7r5r-r2hg"],"modified":"2025-05-20T10:02:07.006Z","published":"2024-03-06T11:14:17.673Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:google:tensorflow:2.8.0:*:*:*:*:*:*:*","cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/core/framework/tensor_key.h#L53-L64"},{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/commit/1b85a28d395dc91f4d22b5f9e1e9a22e92ccecd6"},{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/releases/tag/v2.8.1"},{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/releases/tag/v2.9.0"},{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/security/advisories/GHSA-hc2f-7r5r-r2hg"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-29210"}],"affected":[{"package":{"name":"tensorflow","ecosystem":"Bitnami","purl":"pkg:bitnami/tensorflow"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.8.0"},{"fixed":"2.8.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/tensorflow/BIT-tensorflow-2022-29210.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.7.3"}