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GHSA-mv78-g7wq-mhp4

LowCVSS 2.5 / 10
Published May 21, 2021·Last modified Mar 13, 2026
Affected Components(0)

No affected components available

Description

Impact

The TFLite computation for size of output after padding, ComputeOutSize, does not check that the stride argument is not 0 before doing the division.

inline int ComputeOutSize(TfLitePadding padding, int image_size,
                          int filter_size, int stride, int dilation_rate = 1) {
  int effective_filter_size = (filter_size - 1) * dilation_rate + 1;
  switch (padding) {
    case kTfLitePaddingSame:
      return (image_size + stride - 1) / stride;
    case kTfLitePaddingValid:
      return (image_size + stride - effective_filter_size) / stride;
    default:
      return 0;
  }
}

Users can craft special models such that ComputeOutSize is called with stride set to 0.

Patches

We have patched the issue in GitHub commit 49847ae69a4e1a97ae7f2db5e217c77721e37948.

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.

For more information

Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.

Attribution

This vulnerability has been reported by members of the Aivul Team from Qihoo 360.

Risk Scores
Base Score
2.5

The vulnerability requires local access to the device to be exploited. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the availability of the system.

Threat Intelligence
2.3

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.20%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Low severity
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