CVE-2021-29562: Denial of Service Vulnerability in TensorFlow
Summary
CVE-2021-29562: TensorFlow is an end-to-end open source platform for machine learning. Affects tensorflow across 5 version ranges.
< 1c56f53be0b722ca657cbc7df461ed676c8642a2
< 2.1.4
>= 2.2.0, < 2.2.3
>= 2.3.0, < 2.3.3
>= 2.4.0, < 2.4.2
Fixed in 4 releases; the minimum fixed version depends on the release line you run. How to fix ↓
Also tracked for
- tensorflow · Bitnami
- tensorflow-cpu · PyPI
- tensorflow-gpu · PyPI
The same CVE-2021-29562 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
TensorFlow is an end-to-end open source platform for machine learning. It provides a comprehensive ecosystem of tools, libraries, and community resources that enable researchers and developers to build and deploy machine learning models. TensorFlow is widely used in various domains, including computer vision, natural language processing, and robotics. This vulnerability affects versions 2.1.4 and above of TensorFlow.
Vulnerability Detail
This vulnerability in TensorFlow allows an attacker to cause a denial of service (DoS) by exploiting a CHECK-failure in the implementation of tf.raw_ops.IRFFT. By triggering this vulnerability, an attacker can disrupt the normal operation of TensorFlow, leading to a complete loss of service. The vulnerability has been assigned the identifier CVE-2021-29562 and has been classified as a high-severity issue. It was discovered and reported by the TensorFlow security team.
How To Fix
Latest published version: 2.21.0 as of 22 Oct 2026
pip install --upgrade "tensorflow==2.21.0"Upgrading to it may include breaking changes; the versions below are the minimum fixed release for this vulnerability.
If you can't move to the latest
The minimum fixed version depends on the release line you run.
-
< 2.1.42.1.4pip install --upgrade "tensorflow==2.1.4" -
>= 2.2.0, < 2.2.32.2.3pip install --upgrade "tensorflow==2.2.3" -
>= 2.3.0, < 2.3.32.3.3pip install --upgrade "tensorflow==2.3.3" -
>= 2.4.0, < 2.4.22.4.2pip install --upgrade "tensorflow==2.4.2"
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix by upgrading to the latest version of TensorFlow.
Conclusion
The identified vulnerability in TensorFlow can lead to a denial of service, causing a complete loss of service for affected applications. It is crucial to upgrade to the latest version of TensorFlow (2.5.0) or apply the appropriate patches to mitigate this vulnerability. For further support and assistance with vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for tensorflow →
FAQ
This vulnerability allows an attacker to cause a denial of service, resulting in a complete loss of service for TensorFlow applications.
Versions 2.1.4 and above of TensorFlow are affected by this vulnerability.
There is no information available about this vulnerability being exploited in the wild at the time of this report.
The only known mitigation is to upgrade to the latest version of TensorFlow, which includes the fix for this vulnerability.
You can find more information about this vulnerability in the TensorFlow security advisory PYSEC-2021-199.
References
Related vulnerabilities
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