UBUNTU-CVE-2026-44512
A vulnerability in the Open Neural Network Exchange (ONNX) library versions from 1.9.0 up to but not including 1.22.0 allows a denial of service via a null pointer dereference in the Upsample node processing. This occurs when onnx.version_converter.convert_version() processes an untrusted model containing an Upsample node with zero inputs, causing the application to crash irrecoverably. The issue is fixed in version 1.22.0.
AI Analysis
Technical Summary
The ONNX library versions 1.9.0 through 1.21.x contain a vulnerability in the version conversion function onnx.version_converter.convert_version(). Specifically, the function dereferences a null pointer in the Upsample_6_7::adapt_upsample_6_7() method when handling Upsample nodes with zero inputs in untrusted models. This leads to an unrecoverable denial of service condition. The vulnerability is resolved in ONNX version 1.22.0.
Potential Impact
An attacker supplying a crafted ONNX model with an Upsample node that has zero inputs can cause the ONNX version conversion process to crash due to a null pointer dereference. This results in a denial of service affecting availability. There is no impact on confidentiality or integrity.
Mitigation Recommendations
Upgrade ONNX to version 1.22.0 or later, where this vulnerability is fixed. No other mitigations are indicated. Patch status is confirmed fixed in 1.22.0.
UBUNTU-CVE-2026-44512
Description
A vulnerability in the Open Neural Network Exchange (ONNX) library versions from 1.9.0 up to but not including 1.22.0 allows a denial of service via a null pointer dereference in the Upsample node processing. This occurs when onnx.version_converter.convert_version() processes an untrusted model containing an Upsample node with zero inputs, causing the application to crash irrecoverably. The issue is fixed in version 1.22.0.
CVSS v3.1
Score 5.5medium
Affected software
pkg:deb/ubuntu/[email protected]+dfsg-3ubuntu2?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The ONNX library versions 1.9.0 through 1.21.x contain a vulnerability in the version conversion function onnx.version_converter.convert_version(). Specifically, the function dereferences a null pointer in the Upsample_6_7::adapt_upsample_6_7() method when handling Upsample nodes with zero inputs in untrusted models. This leads to an unrecoverable denial of service condition. The vulnerability is resolved in ONNX version 1.22.0.
Potential Impact
An attacker supplying a crafted ONNX model with an Upsample node that has zero inputs can cause the ONNX version conversion process to crash due to a null pointer dereference. This results in a denial of service affecting availability. There is no impact on confidentiality or integrity.
Mitigation Recommendations
Upgrade ONNX to version 1.22.0 or later, where this vulnerability is fixed. No other mitigations are indicated. Patch status is confirmed fixed in 1.22.0.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-44512
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 3.1
Threat ID: 6a58b4b668715ace43da973d
Added to database: 07/16/2026, 10:38:46 UTC
Last enriched: 07/16/2026, 12:51:23 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 5
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