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AVID-2026-R0990
Description
Null pointer dereference in Grappler’s IsConstant in Tensorflow (CVE-2022-23589)
Details
Tensorflow is an Open Source Machine Learning Framework. Under certain scenarios, Grappler component of TensorFlow can trigger a null pointer dereference. There are 2 places where this can occur, for the same malicious alteration of a SavedModel file (fixing the first one would trigger the same dereference in the second place). First, during constant folding, the GraphDef might not have the required nodes for the binary operation. If a node is missing, the correposning mul_*child would be null, and the dereference in the subsequent line would be incorrect. We have a similar issue during IsIdentityConsumingSwitch. The fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, TensorFlow 2.6.3, and TensorFlow 2.5.3, as these are also affected and still in supported range.
Reason for inclusion in AVID: CVE-2022-23589 describes a null pointer dereference in TensorFlow Grappler IsConstant, a vulnerability in a widely-used AI/ML software stack (TensorFlow). It affects the Grappler component used during graph optimization in TensorFlow, and can be triggered by crafted SavedModel inputs, leading to a crash (availability impact). This is a software supply-chain issue in a core AI framework/dependency used to build and run general-purpose AI systems; it is not hardware/firmware-only. Sufficient evidence: the report includes CVE details, affected versions, impact, remediation/commit references, and links.
References
- NVD entry
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-9px9-73fg-3fqp
- https://github.com/tensorflow/tensorflow/commit/045deec1cbdebb27d817008ad5df94d96a08b1bf
- https://github.com/tensorflow/tensorflow/commit/0a365c029e437be0349c31f8d4c9926b69fa3fa1
- https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/mutable_graph_view.cc#L59-L74
- https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/optimizers/constant_folding.cc#L3466-L3497
Affected or Relevant Artifacts
- Developer: tensorflow
- Deployer: tensorflow
- Artifact Details:
| Type | Name |
|---|---|
| System | tensorflow |
Impact
AVID Taxonomy Categorization
- Risk domains: Security
- SEP subcategories: S0100: Software Vulnerability
- Lifecycle stages: L06: Deployment
CVSS
| Version | 3.1 |
| Vector String | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Base Score | 6.5 |
| Base Severity | 🟠 Medium |
| Attack Vector | NETWORK |
| Attack Complexity | 🟢 Low |
| Privileges Required | 🟢 Low |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | 🔴 High |
CWE
| ID | Description |
|---|---|
| CWE-476 | CWE-476: NULL Pointer Dereference |
Other information
- Report Type: Advisory
- Credits:
- Date Reported: 2022-02-04
- Version: 0.3.3
- AVID Entry