CVE-2026-44512

MEDIUM

ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)

Title source: cna
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v3 5.5
EPSS 0.0017
EPSS Percentile 6.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-476
Status published
Products (2)
linuxfoundation/onnx 1.9.0 - 1.22.0
onnx/onnx >= 1.9.0, < 1.22.0
Published Jul 08, 2026
Tracked Since Jul 09, 2026