CVE-2021-29518: TensorFlow null pointer dereference in session ops via raw ops in eager mode

Summary

TensorFlow's session_ops.cc dereferences the session state pointer without checking validity. In eager mode, which is the default in TF 2.0 and later, calling the raw session ops directly makes ctx->session_state() nullptr, so the member call is undefined behavior and can trigger a null pointer dereference.

Mitigation

The fix will be included in TensorFlow 2.5.0. The commit 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

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