CVE-2021-41202

Description

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.

How to fix CVE-2021-41202

To remediate CVE-2021-41202, upgrade the affected package to a fixed version below.

—upgrade to 2.4.4 or later
—upgrade to 2.6.1 or later
—upgrade to 1b0e0ec27e7895b9985076eab32445026ae5ca94 or later
—upgrade to 1b0e0ec27e7895b9985076eab32445026ae5ca94 or later
—upgrade to 2.6.1 or later
—upgrade to 1b0e0ec27e7895b9985076eab32445026ae5ca94 or later
—upgrade to 2.6.1 or later

Is CVE-2021-41202 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (7)

>= 2.4.0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1
>= 2.6.0, < 2.6.1
from 0, < 1b0e0ec27e7895b9985076eab32445026ae5ca94, < 6d94002a09711d297dbba90390d5482b76113899 | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1, >= 2.7.0rc0, < 2.7.0
from 0, < 1b0e0ec27e7895b9985076eab32445026ae5ca94, < 6d94002a09711d297dbba90390d5482b76113899 | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1, >= 2.7.0rc0, < 2.7.0
>= 2.6.0, < 2.6.1
from 0, < 1b0e0ec27e7895b9985076eab32445026ae5ca94, < 6d94002a09711d297dbba90390d5482b76113899 | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1, >= 2.7.0rc0, < 2.7.0
>= 2.6.0, < 2.6.1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
osv	CVSS 3.1	MEDIUM5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H