4.3
CVSSv2

CVE-2021-41213

Published: 05/11/2021 Updated: 20/10/2022
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Vulnerability Summary

TensorFlow is an open source platform for machine learning. In affected versions the code behind `tf.function` API can be made to deadlock when two `tf.function` decorated Python functions are mutually recursive. This occurs due to using a non-reentrant `Lock` Python object. Loading any model which contains mutually recursive functions is vulnerable. An attacker can cause denial of service by causing users to load such models and calling a recursive `tf.function`, although this is not a frequent scenario. 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.

Vulnerability Trend

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google tensorflow

google tensorflow 2.7.0

Vendor Advisories

In TensorFlow before version 261, the code behind tffunction API can be made to deadlock when two tffunction decorated Python functions are mutually recursive This occurs due to using a non-reentrant Lock Python object Loading any model which contains mutually recursive functions is vulnerable An attacker can cause denial of service by causi ...