CVE-2021-37646: TensorFlow integer overflow in tf.raw_ops.StringNGrams memory allocation

Summary

In affected TensorFlow versions, `tf.raw_ops.StringNGrams` has an integer overflow. Negative `ngram_widths` supplied by a user are implicitly converted from a signed to an unsigned value when `reserve` calls `TF_TString_Reserve`, producing a very large allocation size.

Mitigation

Patched in GitHub commit c283e542a3f422420cfdb332414543b62fc4e4a5. The fix will be included in TensorFlow 2.6.0, and the commit will be cherry-picked to TensorFlow 2.5.1, 2.4.3 and 2.3.4.

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

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