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AVID-2026-R1067
Description
CHECK failures in UnbatchGradOp in TensorFlow (CVE-2022-35952)
Details
TensorFlow is an open source platform for machine learning. The UnbatchGradOp function takes an argument id that is assumed to be a scalar. A nonscalar id can trigger a CHECK failure and crash the program. It also requires its argument batch_index to contain three times the number of elements as indicated in its batch_index.dim_size(0). An incorrect batch_index can trigger a CHECK failure and crash the program. We have patched the issue in GitHub commit 5f945fc6409a3c1e90d6970c9292f805f6e6ddf2. The fix will be included in TensorFlow 2.10.0. We will also cherrypick this commit on TensorFlow 2.9.1, TensorFlow 2.8.1, and TensorFlow 2.7.2, as these are also affected and still in supported range. There are no known workarounds for this issue.
Reason for inclusion in AVID: CVE-2022-35952 describes a software vulnerability in TensorFlow’s UnbatchGradOp that can crash the program via CHECK failures when fed a nond scalar id or a mismatched batch_index. TensorFlow is a core AI framework; this affects software that builds/trains/deploys AI systems, i.e., the AI software stack. This is a security/safety vulnerability (potential denial of service / crash) in a component used to build general-purpose AI systems, and the report provides concrete evidence (commit fix, affected versions, CVSS). Therefore it should be kept for AVID curation as a software supply chain vulnerability in AI stacks.
References
- NVD entry
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-h5vq-gw2c-pq47
- https://github.com/tensorflow/tensorflow/commit/5f945fc6409a3c1e90d6970c9292f805f6e6ddf2
- https://github.com/tensorflow/tensorflow/blob/769eddaf479c8debead9a59a72617d6ed6f0fe10/tensorflow/core/kernels/batch_kernels.cc#L891
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:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Base Score | 5.9 |
| Base Severity | 🟠 Medium |
| Attack Vector | NETWORK |
| Attack Complexity | 🔴 High |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | 🔴 High |
CWE
| ID | Description |
|---|---|
| CWE-617 | CWE-617: Reachable Assertion |
Other information
- Report Type: Advisory
- Credits:
- Date Reported: 2022-09-16
- Version: 0.3.3
- AVID Entry