CVE-2021-41227

Description

TensorFlow is an open source platform for machine learning. In affected versions the `ImmutableConst` operation in TensorFlow can be tricked into reading arbitrary memory contents. This is because the `tstring` TensorFlow string class has a special case for memory mapped strings but the operation itself does not offer any support for this datatype. 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-2021-41227

To remediate CVE-2021-41227, 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 3712a2d3455e6ccb924daa5724a3652a86f6b585 or later
—upgrade to 3712a2d3455e6ccb924daa5724a3652a86f6b585 or later
—upgrade to 2.6.1 or later
—upgrade to 3712a2d3455e6ccb924daa5724a3652a86f6b585 or later
—upgrade to 2.6.1 or later

Is CVE-2021-41227 being exploited?

Low — EPSS is 0.1%, 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, < 3712a2d3455e6ccb924daa5724a3652a86f6b585, < 1cb6bb6c2a6019417c9adaf9e6843ba75ee2580b | 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, < 3712a2d3455e6ccb924daa5724a3652a86f6b585, < 1cb6bb6c2a6019417c9adaf9e6843ba75ee2580b | 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, < 3712a2d3455e6ccb924daa5724a3652a86f6b585, < 1cb6bb6c2a6019417c9adaf9e6843ba75ee2580b | 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:H/VI:L/VA:L/SC:N/SI:N/SA:N
osv	CVSS 3.1	MEDIUM6.6	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L