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Moderate severityNVD Advisory· Published Aug 12, 2021· Updated Aug 4, 2024

Heap OOB in `RaggedGather` in TensorFlow

CVE-2021-37641

Description

TensorFlow is an end-to-end open source platform for machine learning. In affected versions if the arguments to tf.raw_ops.RaggedGather don't determine a valid ragged tensor code can trigger a read from outside of bounds of heap allocated buffers. The implementation directly reads the first dimension of a tensor shape before checking that said tensor has rank of at least 1 (i.e., it is not a scalar). Furthermore, the implementation does not check that the list given by params_nested_splits is not an empty list of tensors. We have patched the issue in GitHub commit a2b743f6017d7b97af1fe49087ae15f0ac634373. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
tensorflowPyPI
< 2.3.42.3.4
tensorflowPyPI
>= 2.4.0, < 2.4.32.4.3
tensorflowPyPI
>= 2.5.0, < 2.5.12.5.1
tensorflow-cpuPyPI
< 2.3.42.3.4
tensorflow-cpuPyPI
>= 2.4.0, < 2.4.32.4.3
tensorflow-cpuPyPI
>= 2.5.0, < 2.5.12.5.1
tensorflow-gpuPyPI
< 2.3.42.3.4
tensorflow-gpuPyPI
>= 2.4.0, < 2.4.32.4.3
tensorflow-gpuPyPI
>= 2.5.0, < 2.5.12.5.1

Affected products

1

Patches

1
a2b743f6017d

Fix heap OOB in `tf.raw_ops.RaggedGather`

https://github.com/tensorflow/tensorflowMihai MaruseacAug 3, 2021via ghsa
commit
1 file changed · +7 −1
  • tensorflow/core/kernels/ragged_gather_op.cc+7 −1 modified
    @@ -58,15 +58,21 @@ class RaggedGatherOpBase : public OpKernel {
 
   void Compute(OpKernelContext* context) override {
     // Get the input Tensors.
+
     OpInputList params_nested_splits_in;
     OP_REQUIRES_OK(context, context->input_list("params_nested_splits",
                                                 &params_nested_splits_in));
+    OP_REQUIRES(
+        context, params_nested_splits_in.size() > 0,
+        errors::InvalidArgument("params_nested_splits must be non empty"));
+
     const Tensor& params_dense_values_in =
         context->input(params_nested_splits_in.size());
     const Tensor& indices_in =
         context->input(params_nested_splits_in.size() + 1);
 
-    DCHECK_GT(params_nested_splits_in.size(), 0);  // Enforced by REGISTER_OP.
+    OP_REQUIRES(context, params_nested_splits_in[0].dims() > 0,
+                errors::InvalidArgument("Split tensors must not be scalars"));
     SPLITS_TYPE num_params = params_nested_splits_in[0].dim_size(0) - 1;
     OP_REQUIRES_OK(context, ValidateIndices(indices_in, num_params));

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

7

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