CVE-2021-41202

Advisory

Tensorflow versions 2.4.4, 2.5.2 and 2.6.1 include a fix for CVE-2021-41202: In affected versions, while calculating the size of the output within the 'tf.range' kernel, there is a conditional statement of type 'int64 = condition ? int64 : double'. Due to C++ implicit conversion rules, both branches of the condition will be cast to 'double' and the result would be truncated before the assignment. This result in overflows. The fix is included in TensorFlow 2.7.0.
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-xrqm-fpgr-6hhx

Affected package

Affected versions

Fixed versions

Vulnerability changelog

TensorFlow is an open source platform for machine learning. In affected versions while calculating the size of the output within the `tf.range` kernel, there is a conditional statement of type `int64 = condition ? int64 : double`. Due to C++ implicit conversion rules, both branches of the condition will be cast to `double` and the result would be truncated before the assignment. This result in overflows. 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. See CVE-2021-41202.


CONFIRM:https://github.com/tensorflow/tensorflow/security/advisories/GHSA-xrqm-fpgr-6hhx: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-xrqm-fpgr-6hhx
MISC:https://github.com/tensorflow/tensorflow/commit/1b0e0ec27e7895b9985076eab32445026ae5ca94: https://github.com/tensorflow/tensorflow/commit/1b0e0ec27e7895b9985076eab32445026ae5ca94
MISC:https://github.com/tensorflow/tensorflow/commit/6d94002a09711d297dbba90390d5482b76113899: https://github.com/tensorflow/tensorflow/commit/6d94002a09711d297dbba90390d5482b76113899
MISC:https://github.com/tensorflow/tensorflow/issues/46889: https://github.com/tensorflow/tensorflow/issues/46889
MISC:https://github.com/tensorflow/tensorflow/issues/46912: https://github.com/tensorflow/tensorflow/issues/46912

Resources

• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-xrqm-fpgr-6hhx
• https://github.com/tensorflow/tensorflow/commit/1b0e0ec27e7895b9985076eab32445026ae5ca94
• https://github.com/tensorflow/tensorflow/commit/6d94002a09711d297dbba90390d5482b76113899
• https://github.com/tensorflow/tensorflow/issues/46889
• https://github.com/tensorflow/tensorflow/issues/46912
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41202