CVE-2021-41217
Description
TensorFlow is an open source platform for machine learning. In affected versions the process of building the control flow graph for a TensorFlow model is vulnerable to a null pointer exception when nodes that should be paired are not. This occurs because the code assumes that the first node in the pairing (e.g., an `Enter` node) always exists when encountering the second node (e.g., an `Exit` node). When this is not the case, `parent` is `nullptr` so dereferencing it causes a crash. 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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-41217
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 2.6.1-1 | |
| debian | forky | fixed | 0 |
| debian | sid | fixed | 0 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | tensorflow | >=2.6.0,<2.6.1 | 2.6.1 |
| PyPI | tensorflow | >=2.5.0,<2.5.2 | 2.5.2 |
| PyPI | tensorflow | <2.4.4 | 2.4.4 |
| PyPI | tensorflow-cpu | >=2.6.0,<2.6.1 | 2.6.1 |
| PyPI | tensorflow-cpu | >=2.5.0,<2.5.2 | 2.5.2 |
| PyPI | tensorflow-cpu | <2.4.4 | 2.4.4 |
| PyPI | tensorflow-gpu | >=2.6.0,<2.6.1 | 2.6.1 |
| PyPI | tensorflow-gpu | >=2.5.0,<2.5.2 | 2.5.2 |
| PyPI | tensorflow-gpu | <2.4.4 | 2.4.4 |
| PyPI | tensorflow | <05cbebd3c6bb8f517a158b0155debb8df79017ff||>=2.7.0rc0,<2.7.0 | 05cbebd3c6bb8f517a158b0155debb8df79017ff |
| PyPI | tensorflow-gpu | <05cbebd3c6bb8f517a158b0155debb8df79017ff||>=2.7.0rc0,<2.7.0 | 05cbebd3c6bb8f517a158b0155debb8df79017ff |
| PyPI | tensorflow-cpu | <05cbebd3c6bb8f517a158b0155debb8df79017ff||>=2.7.0rc0,<2.7.0 | 05cbebd3c6bb8f517a158b0155debb8df79017ff |
References
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-5crj-c72x-m7gq
- https://nvd.nist.gov/vuln/detail/CVE-2021-41217
- https://github.com/tensorflow/tensorflow/commit/05cbebd3c6bb8f517a158b0155debb8df79017ff
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-626.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-824.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-409.yaml
- https://github.com/tensorflow/tensorflow
- https://security-tracker.debian.org/tracker/CVE-2021-41217
Verify integrity in audit chain (admin only). AS-IS.