{"id":"UBUNTU-CVE-2026-63419","details":"OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A zbuffer-only tiled iff is exposed with a 16-bit public imagespec while the decoder retains a 32-bit internal pixel size. iffinput::read_native_tile() copies according to m_header.pixel_bytes() rather than imagespec::tile_bytes(true), and a failed read can leave m_buf nonempty so a later call copies partially initialized data into the undersized caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/iff.imageio/iffinput.cpp, IffInput::read_native_tile(), ImageSpec::tile_bytes(true), m_header.pixel_bytes(), ZBUFFER, and m_buf, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.","modified":"2026-09-21T21:39:53.066784018Z","published":"2026-09-21T00:00:00Z","upstream":["CVE-2026-63419"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63419"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-63419"},{"type":"REPORT","url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-w6wc-gcf4-5pj2"},{"type":"REPORT","url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5268"},{"type":"REPORT","url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/9cda48b150294c7f024e680a6c9b0402e50f4816"},{"type":"REPORT","url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/9cda48b150294c7f024e680a6c9b0402e50f4816"},{"type":"REPORT","url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.0.21.0"},{"type":"REPORT","url":"https://github.com/AcademySoftwareFoundation/OpenImageIO/releases/tag/v3.1.16.0"}],"affected":[{"package":{"name":"openimageio","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.17~dfsg0-1ubuntu2","1.5.20~dfsg0-1ubuntu2","1.5.23~dfsg0-1ubuntu1","1.6.9~dfsg0-4ubuntu1","1.6.10~dfsg0-1ubuntu1","1.6.10~dfsg0-2ubuntu1","1.6.11~dfsg0-1ubuntu1","1.6.11~dfsg0-1ubuntu1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenimageio1.6","binary_version":"1.6.11~dfsg0-1ubuntu1+esm2"},{"binary_name":"openimageio-tools","binary_version":"1.6.11~dfsg0-1ubuntu1+esm2"},{"binary_name":"python-openimageio","binary_version":"1.6.11~dfsg0-1ubuntu1+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63419.json"}},{"package":{"name":"openimageio","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.17~dfsg0-1ubuntu5","1.7.17~dfsg0-1ubuntu2","1.7.17~dfsg0-1ubuntu2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenimageio1.7","binary_version":"1.7.17~dfsg0-1ubuntu2+esm1"},{"binary_name":"openimageio-tools","binary_version":"1.7.17~dfsg0-1ubuntu2+esm1"},{"binary_name":"python-openimageio","binary_version":"1.7.17~dfsg0-1ubuntu2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63419.json"}},{"package":{"name":"openimageio","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.10~dfsg0-1","2.0.11~dfsg0-1","2.0.12~dfsg0-1","2.0.12~dfsg0-1build1","2.0.12~dfsg0-1build2","2.1.10.1~dfsg0-5ubuntu4","2.1.10.1~dfsg0-5ubuntu5","2.1.12.0~dfsg0-1","2.1.12.0~dfsg0-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenimageio2.1","binary_version":"2.1.12.0~dfsg0-1ubuntu0.1~esm1"},{"binary_name":"openimageio-tools","binary_version":"2.1.12.0~dfsg0-1ubuntu0.1~esm1"},{"binary_name":"python3-openimageio","binary_version":"2.1.12.0~dfsg0-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63419.json"}},{"package":{"name":"openimageio","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/openimageio?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.10.1+dfsg-1build1","2.2.18.0+dfsg-1","2.2.18.0+dfsg-1build2","2.2.18.0+dfsg-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2.18.0+dfsg-1ubuntu2","binary_name":"libopenimageio2.2"},{"binary_version":"2.2.18.0+dfsg-1ubuntu2","binary_name":"openimageio-tools"},{"binary_name":"python3-openimageio","binary_version":"2.2.18.0+dfsg-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63419.json"}},{"package":{"name":"openimageio","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.14.0+dfsg-1","2.4.16.0+dfsg-1","2.4.16.0+dfsg-1build1","2.4.17.0+dfsg-1","2.4.17.0+dfsg-1build1","2.4.17.0+dfsg-1.1build3","2.4.17.0+dfsg-1.1build4","2.4.17.0+dfsg-1.1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenimageio2.4t64","binary_version":"2.4.17.0+dfsg-1.1ubuntu0.1~esm1"},{"binary_name":"openimageio-tools","binary_version":"2.4.17.0+dfsg-1.1ubuntu0.1~esm1"},{"binary_name":"python3-openimageio","binary_version":"2.4.17.0+dfsg-1.1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63419.json"}},{"package":{"name":"openimageio","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.18.0+dfsg-1build2","2.5.19.1+dfsg-1build1","2.5.19.1+dfsg-1build3","2.5.19.1+dfsg-1build5","2.5.19.1+dfsg-2","2.5.19.1+dfsg-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenimageio2.5","binary_version":"2.5.19.1+dfsg-2ubuntu0.1~esm1"},{"binary_version":"2.5.19.1+dfsg-2ubuntu0.1~esm1","binary_name":"openimageio-tools"},{"binary_name":"python3-openimageio","binary_version":"2.5.19.1+dfsg-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63419.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}