CVE-2026-44512 Details
Description
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.version_converter.convert_version() can dereference a null pointer in Upsample_6_7::adapt_upsample_6_7() in onnx/version_converter/adapters/upsample_6_7.h when processing an untrusted model with an Upsample node that has zero inputs, causing an unrecoverable denial of service. This issue is fixed in version 1.22.0.
A null pointer dereference vulnerability has been identified in the Open Neural Network Exchange (ONNX) version converter. This issue affects ONNX versions 1.9.0 prior to 1.22.0. The vulnerability arises in the 'Upsample_6_7' adapter when processing an untrusted model containing an Upsample node with zero inputs. The adapter fails to validate the number of inputs before accessing them, leading to an undefined behavior that can be exploited to cause a segmentation fault, resulting in a denial-of-service condition.
Users can upgrade to ONNX version 1.22.0, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf | [email protected] | Patch |
| https://github.com/onnx/onnx/pull/7813 | [email protected] | Issue TrackingPatch |
| https://github.com/onnx/onnx/releases/tag/v1.22.0 | [email protected] | ProductRelease Notes |
| https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linuxfoundation onnx | >= 1.9.0, < 1.22.0 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 13, 2026 | Initial Analysis | [email protected] |
| Jul 9, 2026 | CVE Modified | CISA-ADP |
| Jul 8, 2026 | New CVE Received | [email protected] |