{"id":"CVE-2026-44512","summary":"ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)","details":"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.","aliases":["GHSA-hwpq-hmq9-wj77","PYSEC-2026-2689"],"modified":"2026-08-05T03:32:35.690087353Z","published":"2026-07-08T19:32:04.886Z","related":["CGA-6mmc-4www-2q74"],"database_specific":{"cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44512.json","unresolved_ranges":[{"extracted_events":[{"introduced":"1.9.0"},{"fixed":"1.22.0"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"introduced":"1.9.0"},{"fixed":"1.22.0"}],"source":"DESCRIPTION"}],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/onnx/onnx/releases/tag/v1.22.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44512.json"},{"type":"ADVISORY","url":"https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44512"},{"type":"FIX","url":"https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf"},{"type":"FIX","url":"https://github.com/onnx/onnx/pull/7813"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/onnx/onnx","events":[{"introduced":"0"},{"fixed":"cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf"},{"fixed":"2bb50465112feca9003e1ed654d77f01ff1415ca"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.3.0","v1.1.0","v0.2","v0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44512.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}