NetSight
IP …
low2.5

CVE-2021-29616

Null dereference in Grappler's `TrySimplify`

Impact

### Impact 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. ### Patches We have patched the issue in GitHub commit [e6340f0665d53716ef3197ada88936c2a5f7a2d3](https://github.com/tensorflow/tensorflow/commit/e6340f0665d53716ef3197ada88936c2a5f7a2d3). 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. ### For more information Please consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.

Affected packages

EcosystemPackageAffectedFixed in
piptensorflow< 2.1.42.1.4
piptensorflow-cpu< 2.1.42.1.4
piptensorflow-gpu< 2.1.42.1.4

Affected products

VendorProductAffected versions
GoogleTensorflow
before 2.1.4
from 2.2.0 before 2.2.3
from 2.3.0 before 2.3.3
from 2.4.0 before 2.4.2

Weakness classification

CWE-476

References