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Low severityNVD Advisory· Published May 14, 2021· Updated Aug 3, 2024

Division by 0 in `SparseMatMul`

CVE-2021-29557

Description

TensorFlow is an end-to-end open source platform for machine learning. An attacker can cause a denial of service via a FPE runtime error in tf.raw_ops.SparseMatMul. The division by 0 occurs deep in Eigen code because the b tensor is empty. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
tensorflowPyPI
< 2.1.42.1.4
tensorflowPyPI
>= 2.2.0, < 2.2.32.2.3
tensorflowPyPI
>= 2.3.0, < 2.3.32.3.3
tensorflowPyPI
>= 2.4.0, < 2.4.22.4.2
tensorflow-cpuPyPI
< 2.1.42.1.4
tensorflow-cpuPyPI
>= 2.2.0, < 2.2.32.2.3
tensorflow-cpuPyPI
>= 2.3.0, < 2.3.32.3.3
tensorflow-cpuPyPI
>= 2.4.0, < 2.4.22.4.2
tensorflow-gpuPyPI
< 2.1.42.1.4
tensorflow-gpuPyPI
>= 2.2.0, < 2.2.32.2.3
tensorflow-gpuPyPI
>= 2.3.0, < 2.3.32.3.3
tensorflow-gpuPyPI
>= 2.4.0, < 2.4.22.4.2

Affected products

1

Patches

1
7f283ff806b2

Fix FPE issue in external Eigen source code issue with `tf.raw_ops.SparseMatMul`.

https://github.com/tensorflow/tensorflowAmit PatankarApr 28, 2021via ghsa
commit
1 file changed · +4 −0
  • tensorflow/core/kernels/sparse_matmul_op.cc+4 −0 modified
    @@ -1039,6 +1039,10 @@ class SparseMatMulOp : public OpKernel {
     if (transpose_b) {
       // TODO(agarwal): avoid transposing the matrix here and directly handle
       // transpose in CreateDenseSlices.
+      OP_REQUIRES(ctx, right->dim_size(0) != 0,
+                  errors::InvalidArgument("b has an entry 0 in it's shape."));
+      OP_REQUIRES(ctx, right->dim_size(1) != 0,
+                  errors::InvalidArgument("b has an entry 0 in it's shape."));
       right_tr.reset(
           new Tensor(right->dtype(),
                      TensorShape({right->dim_size(1), right->dim_size(0)})));

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

News mentions

0

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