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

Heap out of bounds read in `MaxPoolGradWithArgmax`

CVE-2021-29570

Description

TensorFlow is an end-to-end open source platform for machine learning. The implementation of tf.raw_ops.MaxPoolGradWithArgmax can cause reads outside of bounds of heap allocated data if attacker supplies specially crafted inputs. The implementation(https://github.com/tensorflow/tensorflow/blob/ef0c008ee84bad91ec6725ddc42091e19a30cf0e/tensorflow/core/kernels/maxpooling_op.cc#L1016-L1017) uses the same value to index in two different arrays but there is no guarantee that the sizes are identical. 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
dcd7867de0fe

Fix heap buffer overflow

https://github.com/tensorflow/tensorflowMihai MaruseacMay 5, 2021via ghsa
commit
1 file changed · +3 −0
  • tensorflow/core/kernels/maxpooling_op.cc+3 −0 modified
    @@ -1014,6 +1014,9 @@ struct LaunchMaxPoolingGradWithArgmax<CPUDevice, T> {
         const int input_start = start * input_size_per_batch;
         const int input_end = limit * input_size_per_batch;
         for (int64 index = input_start; index < input_end; index++) {
+          if (index >= argmax.NumElements()) {
+            break;
+          }
           int64 grad_out_index = argmax_flat(index);
           if (!include_batch_in_index) {
             const int64 cur_batch = index / input_size_per_batch;

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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