CVE-2021-29615: TensorFlow Stack Overflow in ParseAttrValue
Summary
CVE-2021-29615: TensorFlow is an end-to-end open source platform for machine learning. Affects tensorflow-cpu across 5 version ranges.
< 2.1.4
>= 2.2.0, < 2.2.3
>= 2.3.0, < 2.3.3
>= 2.4.0, < 2.4.2
< e07e1c3d26492c06f078c7e5bf2d138043e199c1
Fixed in 4 releases; the minimum fixed version depends on the release line you run. How to fix ↓
Also tracked for
- tensorflow · Bitnami
- tensorflow · PyPI
- tensorflow · PyPI
- tensorflow-gpu · PyPI
The same CVE-2021-29615 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 resources for building and deploying machine learning models. TensorFlow is widely used in various industries and research domains.
Vulnerability Detail
The vulnerability (CVE-2021-29615) in TensorFlow arises from a stack overflow issue in the implementation of the ParseAttrValue function. This function, located in the attr_value_util.cc file, can be exploited by providing a specially crafted input, leading to a recursive stack overflow. The vulnerability affects versions of TensorFlow up to 2.4.2, including 2.1.4, 2.2.3, and 2.3.3. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial-of-service (DoS) condition.
How To Fix
Latest published version: 2.21.0 as of 22 Oct 2026
pip install --upgrade "tensorflow-cpu==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-cpu==2.1.4" -
>= 2.2.0, < 2.2.32.2.3pip install --upgrade "tensorflow-cpu==2.2.3" -
>= 2.3.0, < 2.3.32.3.3pip install --upgrade "tensorflow-cpu==2.3.3" -
>= 2.4.0, < 2.4.22.4.2pip install --upgrade "tensorflow-cpu==2.4.2"
Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →
Workaround
There is no known workaround for this vulnerability. It is recommended to apply the provided patches or update to the latest version of TensorFlow.
Conclusion
The vulnerability in TensorFlow (CVE-2021-29615) poses a risk of arbitrary code execution or denial-of-service attacks. Users should update their TensorFlow installations to the latest patched version or apply the provided patches for older versions. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for tensorflow-cpu →
FAQ
TensorFlow is an open source platform for machine learning, widely used for developing and deploying machine learning models.
This vulnerability could allow an attacker to execute arbitrary code or cause a denial-of-service condition in TensorFlow applications.
Versions up to 2.4.2, including 2.1.4, 2.2.3, and 2.3.3, are affected by this vulnerability.
To fix this vulnerability, update your TensorFlow installation to version 2.5.0 or apply the provided patches for older versions.
No, there is no known workaround for this vulnerability. It is recommended to update TensorFlow to the latest patched version.
References
Related vulnerabilities
Recent vulnerabilities recorded for tensorflow-cpu.
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