What’s Vulnerable › Vulnerabilities

CVE-2022-41880: ThreadUnsafeUnigramCandidateSampler Heap out of bounds in Tensorflow

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-11-18 · updated 2026-06-17
• Weakness: CWE-125

Description

TensorFlow is an open source platform for machine learning. When the `BaseCandidateSamplerOp` function receives a value in `true_classes` larger than `range_max`, a heap oob read occurs. We have patched the issue in GitHub commit b389f5c944cadfdfe599b3f1e4026e036f30d2d4. The fix will be included in TensorFlow 2.11. We will also cherrypick this commit on TensorFlow 2.10.1, 2.9.3, and TensorFlow 2.8.4, as these are also affected and still in supported range.

Affected products

• tensorflow: before 2.8.4; from 2.9.0 before 2.9.3; 2.10.0 — fixed in 2.8.4, 2.9.3

How to fix

Upgrade to a fixed version: tensorflow 2.8.4, 2.9.3. Check the vendor advisory for mitigations.

References

• https://github.com/tensorflow/tensorflow/blob/master/tensorflow/core/kernels/candidate_sampler_ops.cc
• https://github.com/tensorflow/tensorflow/commit/b389f5c944cadfdfe599b3f1e4026e036f30d2d4
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-8w5g-3wcv-9g2j
• https://github.com/tensorflow/tensorflow/blob/master/tensorflow/core/kernels/candidate_sampler_ops.cc
• https://github.com/tensorflow/tensorflow/commit/b389f5c944cadfdfe599b3f1e4026e036f30d2d4
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-8w5g-3wcv-9g2j

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