Vulnerability · Published May 14, 2021 · Assigned by GitHub_M
CVE-2021-29616Null dereference in Grappler's `TrySimplify`
Low 2.5
In plain English
A low-severity null pointer dereference in tensorflow from tensorflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
TensorFlow is an end-to-end open source platform for machine learning. The implementation of TrySimplify(https://github.com/tensorflow/tensorflow/blob/c22d88d6ff33031aa113e48aa3fc9aa74ed79595/tensorflow/core/grappler/optimizers/arithmetic_optimizer.cc#L390-L401) has undefined behavior due to dereferencing a null pointer in corner cases that result in optimizing a node with no inputs. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | tensorflow | 2.3.3 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow | 2.4.2 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow | 2.1.4 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-253 |
| PyPI | tensorflow | 2.2.3 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-cpu | 2.4.2 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-cpu | 2.1.4 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-cpu | 2.2.3 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-cpu | 2.3.3 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-cpu | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-544 |
| PyPI | tensorflow-gpu | 2.3.3 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-gpu | 2.4.2 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-gpu | 2.1.4 | GHSA-4hvv-7x94-7vq8 |
| PyPI | tensorflow-gpu | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-742 |
| PyPI | tensorflow-gpu | 2.2.3 | GHSA-4hvv-7x94-7vq8 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tensorflow | tensorflow | < 2.1.4>= 2.2.0, < 2.2.3>= 2.3.0, < 2.3.3>= 2.4.0, < 2.4.2 |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L