CVE-2021-37664

critical
Published 2021-08-25 · Modified 2023-12-06
CVSS v3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
CVSS v2
VIR risk
9.5

Description

TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can read from outside of bounds of heap allocated data by sending specially crafted illegal arguments to `BoostedTreesSparseCalculateBestFeatureSplit`. The [implementation](https://github.com/tensorflow/tensorflow/blob/84d053187cb80d975ef2b9684d4b61981bca0c41/tensorflow/core/kernels/boosted_trees/stats_ops.cc) needs to validate that each value in `stats_summary_indices` is in range. We have patched the issue in GitHub commit e84c975313e8e8e38bb2ea118196369c45c51378. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-37664

OS impact

OSVersionStatusFixed in
arch archfixed2.5.1-1
debian debianforkyfixed0
debian debiansidfixed0

Package impact

EcosystemPackageVulnerableFixed
python PyPItensorflow<2.3.42.3.4
python PyPItensorflow>=2.4.0,<2.4.32.4.3
python PyPItensorflow>=2.5.0,<2.5.12.5.1
python PyPItensorflow-cpu<2.3.42.3.4
python PyPItensorflow-cpu>=2.4.0,<2.4.32.4.3
python PyPItensorflow-cpu>=2.5.0,<2.5.12.5.1
python PyPItensorflow-gpu<2.3.42.3.4
python PyPItensorflow-gpu>=2.4.0,<2.4.32.4.3
python PyPItensorflow-gpu>=2.5.0,<2.5.12.5.1
python PyPItensorflow-cpu<e84c975313e8e8e38bb2ea118196369c45c51378||>=2.4.0,<2.4.3e84c975313e8e8e38bb2ea118196369c45c51378
python PyPItensorflow<e84c975313e8e8e38bb2ea118196369c45c51378||>=2.4.0,<2.4.3e84c975313e8e8e38bb2ea118196369c45c51378
python PyPItensorflow-gpu<e84c975313e8e8e38bb2ea118196369c45c51378||>=2.4.0,<2.4.3e84c975313e8e8e38bb2ea118196369c45c51378

References

Verify integrity in audit chain (admin only). AS-IS.