CVE-2021-41214: Reference binding to `nullptr` in `tf.ragged.cross`
Impact The shape inference code for tf.ragged.cross has an undefined behavior due to binding a reference to nullptr. In the following scenario, this results in a crash:
python import tensorflow as tf @tf.function def test(): y = tf.ragged.cross([tf.ragged.constant([['1']]),'2']) return y test() Patches We have patched the issue in GitHub commit fa6b7782fbb14aa08d767bc799c531f5e1fb3bb8. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
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Attribution This vulnerability has been reported by members of the Aivul Team from Qihoo 360.
Other sources
TensorFlow is an open source platform for machine learning. In affected versions the shape inference code for tf.ragged.cross has an undefined behavior due to binding a reference to nullptr. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-41214?
CVE-2021-41214 has a high severity due to the potential for undefined behavior that can lead to application crashes or security vulnerabilities.
How do I fix CVE-2021-41214?
To fix CVE-2021-41214, upgrade to TensorFlow version 2.4.4, 2.5.2, or 2.6.1, depending on the package you are using.
What software is affected by CVE-2021-41214?
CVE-2021-41214 affects multiple versions of TensorFlow, specifically those from versions prior to 2.4.4 up to 2.6.0.
Is CVE-2021-41214 a critical vulnerability?
While CVE-2021-41214 is not classified as critical, its impact on application stability makes it significant.
When was CVE-2021-41214 disclosed?
CVE-2021-41214 was disclosed in 2021 as part of ongoing security audits and updates for TensorFlow.