CVE-2022-36013 — Null-dereference in `mlir::tfg::GraphDefImporter::ConvertNodeDef` in TensorFlow

Affected: tensorflow

TensorFlow is an open source platform for machine learning. When `mlir::tfg::GraphDefImporter::ConvertNodeDef` tries to convert NodeDefs without an op name, it crashes. We have patched the issue in GitHub commit a0f0b9a21c9270930457095092f558fbad4c03e5. The fix will be included in TensorFlow 2.10.0. We will also cherrypick this commit on TensorFlow 2.9.1, TensorFlow 2.8.1, and TensorFlow 2.7.2, as these are also affected and still in supported range. There are no known workarounds for this issue.

GHSA-828c-5j5q-vrjq — TensorFlow vulnerable to null-dereference in `mlir::tfg::GraphDefImporter::ConvertNodeDef`

Affected: PyPI: tensorflow, PyPI: tensorflow-cpu, PyPI: tensorflow-gpu

### Impact When [`mlir::tfg::GraphDefImporter::ConvertNodeDef`](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/core/ir/importexport/graphdef_import.cc) tries to convert NodeDefs without an op name, it crashes. ```cpp Status GraphDefImporter::ConvertNodeDef(OpBuilder &builder, ConversionState &s, const NodeDef &node) { VLOG(4) << "Importing: " << node.name(); OperationState state(ConvertLocation(node), absl::StrCat("tfg.", node.op()));

// The GraphImporter does light shape inference, but here we will defer all of // that to the shape inference pass. const OpDef *op_def; const OpRegistrationData *op_reg_data = nullptr; if ((op_reg_data = registry_.LookUp(node.op()))) { op_def = &op_reg_data->op_def; } else { auto it = function_op_defs_.find(node.op()); if (it == function_op_defs_.end()) return InvalidArgument("Unable to find OpDef for ", node.op()); op_def = it->second; } ``` `node.op().empty()` cannot be empty.

### Patches We have patched the issue in GitHub commit [a0f0b9a21c9270930457095092f558fbad4c03e5](https://github.com/tensorflow/tensorflow/commit/a0f0b9a21c9270930457095092f558fbad4c03e5).

The fix will be included in TensorFlow 2.10.0. We will also cherrypick this commit on TensorFlow 2.9.1, TensorFlow 2.8.1, and TensorFlow 2.7.2, as these are also affected and still in supported range.

### For more information Please consult [our security guide](https://github.com/te…

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CVE-2022-36013 — Null-dereference in `mlir::tfg::GraphDefImporter::ConvertNodeDef` in TensorFlow

GHSA-828c-5j5q-vrjq — TensorFlow vulnerable to null-dereference in `mlir::tfg::GraphDefImporter::ConvertNodeDef`