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Crash when type cannot be specialized

Moderate
mihaimaruseac published GHSA-rww7-2gpw-fv6j Feb 2, 2022

Package

pip tensorflow, tensorflow-cpu, tensorflow-gpu (pip)

Affected versions

< 2.8.0

Patched versions

2.5.3, 2.6.3, 2.7.1

Description

Impact

Under certain scenarios, TensorFlow can fail to specialize a type during shape inference:

void InferenceContext::PreInputInit(
    const OpDef& op_def, const std::vector<const Tensor*>& input_tensors,
    const std::vector<ShapeHandle>& input_tensors_as_shapes) {
  const auto ret = full_type::SpecializeType(attrs_, op_def);
  DCHECK(ret.status().ok()) << "while instantiating types: " << ret.status();
  ret_types_ = ret.ValueOrDie();
  // ... 
}

However, DCHECK is a no-op in production builds and an assertion failure in debug builds. In the first case execution proceeds to the ValueOrDie line. This results in an assertion failure as ret contains an error Status, not a value. In the second case we also get a crash due to the assertion failure.

Patches

We have patched the issue in GitHub commit cb164786dc891ea11d3a900e90367c339305dc7b.

The fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, and TensorFlow 2.6.3, as these are also affected and still in supported range.

For more information

Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.

Severity

Moderate

CVE ID

CVE-2022-23572

Weaknesses

No CWEs