Improper locking in TensorFlow - CVE-2021-41213
Published: November 5, 2021 / Updated: May 3, 2026
Vulnerability identifier: #VU129193
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-41213
CWE-ID: CWE-667
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
TensorFlow
TensorFlow
Software vendor:
TensorFlow
TensorFlow
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to use of a non-reentrant lock in the tf.function API when loading a model containing mutually recursive functions and calling a recursive tf.function. A remote attacker can cause a user to load a crafted model to cause a denial of service.
This issue is triggered when two tf.function-decorated Python functions are mutually recursive.
Remediation
Install security update from vendor's website.