{"id":"CVE-2026-44512","state":"PUBLISHED","title":"ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)","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.","publishedAt":"2026-07-08T19:32:04.886Z","updatedAt":"2026-07-09T13:36:58.289Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["onnx onnx"],"affected":[{"vendor":"onnx","product":"onnx","versions":[{"version":">= 1.9.0, < 1.22.0","status":"affected"}]}],"references":["https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77","https://github.com/onnx/onnx/pull/7813","https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf","https://github.com/onnx/onnx/releases/tag/v1.22.0"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44512.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44512","state":"PUBLISHED","datePublished":"2026-07-08T19:32:04.886Z","dateUpdated":"2026-07-09T13:36:58.289Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-06T18:28:20.887Z"},"containers":{"cna":{"title":"ONNX: Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"onnx","product":"onnx","versions":[{"version":">= 1.9.0, < 1.22.0","status":"affected"}]}],"references":[{"url":"https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77","name":"https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/onnx/onnx/pull/7813","name":"https://github.com/onnx/onnx/pull/7813","tags":["x_refsource_MISC"]},{"url":"https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf","name":"https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf","tags":["x_refsource_MISC"]},{"url":"https://github.com/onnx/onnx/releases/tag/v1.22.0","name":"https://github.com/onnx/onnx/releases/tag/v1.22.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","description":"CWE-476: NULL Pointer Dereference","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-08T19:32:04.886Z"},"source":{"advisory":"GHSA-hwpq-hmq9-wj77","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T13:36:51.723168Z","id":"CVE-2026-44512","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-09T13:36:58.289Z"}}]}}}