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

Division by zero in TFLite's implementation of hashtable lookup

CVE-2021-29604

Description

TensorFlow is an end-to-end open source platform for machine learning. The TFLite implementation of hashtable lookup is vulnerable to a division by zero error(https://github.com/tensorflow/tensorflow/blob/1a8e885b864c818198a5b2c0cbbeca5a1e833bc8/tensorflow/lite/kernels/hashtable_lookup.cc#L114-L115) An attacker can craft a model such that values's first dimension would be 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
5117e0851348

Prevent a division by 0

https://github.com/tensorflow/tensorflowMihai MaruseacApr 28, 2021via ghsa
commit
1 file changed · +1 −0
  • tensorflow/lite/kernels/hashtable_lookup.cc+1 −0 modified
    @@ -112,6 +112,7 @@ TfLiteStatus Eval(TfLiteContext* context, TfLiteNode* node) {
   TF_LITE_ENSURE_OK(context, GetInputSafe(context, node, 2, &value));
 
   const int num_rows = SizeOfDimension(value, 0);
+  TF_LITE_ENSURE(context, num_rows != 0);
   const int row_bytes = value->bytes / num_rows;
   void* pointer = nullptr;
   DynamicBuffer buf;

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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