{"id":"UBUNTU-CVE-2026-44512","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.","modified":"2026-07-15T17:51:44Z","published":"2026-07-08T20:16:00Z","upstream":["CVE-2026-44512"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-44512"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-44512"},{"type":"REPORT","url":"https://github.com/onnx/onnx/commit/cd310408165ad47c3cd7eb2b86cb5b80aa2e4fdf"},{"type":"REPORT","url":"https://github.com/onnx/onnx/pull/7813"},{"type":"REPORT","url":"https://github.com/onnx/onnx/releases/tag/v1.22.0"},{"type":"REPORT","url":"https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77"}],"affected":[{"package":{"name":"onnx","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/onnx?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.0+dfsg-3build1","1.7.0+dfsg-3build2","1.7.0+dfsg-3ubuntu1","1.7.0+dfsg-3ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libonnx-testdata","binary_version":"1.7.0+dfsg-3ubuntu2"},{"binary_name":"libonnx1","binary_version":"1.7.0+dfsg-3ubuntu2"},{"binary_name":"libonnxifi","binary_version":"1.7.0+dfsg-3ubuntu2"},{"binary_name":"python3-onnx","binary_version":"1.7.0+dfsg-3ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44512.json"}},{"package":{"name":"onnx","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/onnx?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.1-3","1.13.1-3build1","1.14.1-2","1.14.1-2.1","1.14.1-2.1build1","1.14.1-2.1build2","1.14.1-2.1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libonnx-testdata","binary_version":"1.14.1-2.1ubuntu0.1~esm1"},{"binary_version":"1.14.1-2.1ubuntu0.1~esm1","binary_name":"libonnx1t64"},{"binary_name":"python3-onnx","binary_version":"1.14.1-2.1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44512.json"}},{"package":{"name":"onnx","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/onnx?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.17.0-3build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libonnx-testdata","binary_version":"1.17.0-3build1"},{"binary_name":"libonnx1t64","binary_version":"1.17.0-3build1"},{"binary_name":"python3-onnx","binary_version":"1.17.0-3build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44512.json"}},{"package":{"name":"onnx","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/onnx?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.17.0-3build1","1.20.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libonnx-testdata","binary_version":"1.20.0-1"},{"binary_name":"libonnx1t64","binary_version":"1.20.0-1"},{"binary_name":"python3-onnx","binary_version":"1.20.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44512.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}