CVE-2021-29515: TensorFlow MatrixDiag missing non-empty tensor validation

Summary

CVE-2021-29515 affects the `MatrixDiag*` operations in TensorFlow, which do not validate that tensor arguments are non-empty. The fix will ship in TensorFlow 2.5.0 and will also be cherry-picked to TensorFlow 2.4.2, 2.3.3, 2.2.3 and 2.1.4, which are still within supported range.

Mitigation

Fixed in TensorFlow 2.5.0. The fix will also be cherry-picked to TensorFlow 2.4.2, 2.3.3, 2.2.3 and 2.1.4.

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

• tensorflowPyPINo LLM dependency detected · 26 tracked dependents
• tensorflow-gpuPyPINo LLM dependency detected · 2 tracked dependents

Related items

• LowCloakFEM: Agentic FEM Code Generation for Red-Teaming Computational Resource ExhaustionSimilar attack · Arxiv (cs.CR + cs.CL + cs.LG)
• MediumThe Rise of LLMJacking: How Threat Actors Monetize Compromised Cloud and Model ResourcesSimilar attack · Google Threat Intelligence
• InfoThe Blind Spots of Detection: Adversarial Perturbation Attacks against Watchdogs in Distributed LLM InferenceSimilar attack · Arxiv (cs.CR + cs.CL + cs.LG)
• HighCVE-2026-118761: Kubeflow Pipelines decompression bomb in pipeline archive uploadSimilar attack · NVD/CVE Database
• LowOpenCode User Hit with Hostile Backlash After Reporting Free AI LoopholeSimilar attack · Socket Blog