CVE-2021-41215

Description

TensorFlow is an open source platform for machine learning. In affected versions the shape inference code for `DeserializeSparse` can trigger a null pointer dereference. This is because the shape inference function assumes that the `serialize_sparse` tensor is a tensor with positive rank (and having `3` as the last dimension). 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-2021-41215

To remediate CVE-2021-41215, 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 d3738dd70f1c9ceb547258cbb82d853da8771850 or later
• —upgrade to d3738dd70f1c9ceb547258cbb82d853da8771850 or later
• —upgrade to 2.6.1 or later
• —upgrade to d3738dd70f1c9ceb547258cbb82d853da8771850 or later
• —upgrade to 2.6.1 or later

Is CVE-2021-41215 being exploited?

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

Affected packages (7)

• from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1
• >= 2.6.0, < 2.6.1
• from 0, < d3738dd70f1c9ceb547258cbb82d853da8771850 | 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, < d3738dd70f1c9ceb547258cbb82d853da8771850 | 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, < d3738dd70f1c9ceb547258cbb82d853da8771850 | 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

References (7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-41215
• PATCHgithub.com/tensorflow/tensorflow
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-624.yaml
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-822.yaml