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

Division by zero in TFLite's implementation of `OneHot`

CVE-2021-29600

Description

TensorFlow is an end-to-end open source platform for machine learning. The implementation of the OneHot TFLite operator is vulnerable to a division by zero error(https://github.com/tensorflow/tensorflow/blob/f61c57bd425878be108ec787f4d96390579fb83e/tensorflow/lite/kernels/one_hot.cc#L68-L72). An attacker can craft a model such that at least one of the dimensions of indices would be 0. In turn, the prefix_dim_size value would become 0. 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
3ebedd7e3454

Prevent division by 0 in OneHot implementation

https://github.com/tensorflow/tensorflowMihai MaruseacApr 28, 2021via ghsa
commit
1 file changed · +5 −0
  • tensorflow/lite/kernels/one_hot.cc+5 −0 modified
    @@ -69,6 +69,11 @@ void OneHotComputeImpl(const OneHotContext& op_context) {
   for (int i = 0; i < op_context.axis; ++i) {
     prefix_dim_size *= op_context.indices->dims->data[i];
   }
+  if (prefix_dim_size == 0) {
+    // If indices tensor is degenerate, return a degenerate tensor, just like
+    // TensorFlow does.
+    return;
+  }
   const int suffix_dim_size = NumElements(op_context.indices) / prefix_dim_size;
   const int depth = *op_context.depth->data.i32;

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

8

News mentions

0

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