UBUNTU-CVE-2026-63638 (CVE-2026-63638)
Vulnerability from osv_ubuntu – Published: 2026-09-18 16:17 – Updated: 2026-09-23 23:31 – Source website
VLAI
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 crafted cineon image can declare unsupported component bit depth 26. cineoninput::open() maps it to a 32-bit imagespec, but libcineon maps the unsupported depth to an 8-byte value, so cineoninput::read_native_scanline() causes attacker-controlled data to be written beyond the 4-byte-per-pixel caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/cineon.imageio/cineoninput.cpp, CineonInput::open(), CineonInput::read_native_scanline(), ComponentDataSize(), bit depth 26, and ImageSpec, 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.
Severity
8.3 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "openimageio",
"purl": "pkg:deb/ubuntu/openimageio@1.6.11~dfsg0-1ubuntu1+esm2?arch=source\u0026distro=esm-apps-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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": "libopenimageio1.7",
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "openimageio",
"purl": "pkg:deb/ubuntu/openimageio@1.7.17~dfsg0-1ubuntu2+esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6.17~dfsg0-1ubuntu5",
"1.7.17~dfsg0-1ubuntu2",
"1.7.17~dfsg0-1ubuntu2+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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "openimageio",
"purl": "pkg:deb/ubuntu/openimageio@2.1.12.0~dfsg0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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": "libopenimageio2.2",
"binary_version": "2.2.18.0+dfsg-1ubuntu2"
},
{
"binary_name": "openimageio-tools",
"binary_version": "2.2.18.0+dfsg-1ubuntu2"
},
{
"binary_name": "python3-openimageio",
"binary_version": "2.2.18.0+dfsg-1ubuntu2"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "openimageio",
"purl": "pkg:deb/ubuntu/openimageio@2.2.18.0+dfsg-1ubuntu2?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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_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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "openimageio",
"purl": "pkg:deb/ubuntu/openimageio@2.4.17.0+dfsg-1.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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": "libopenimageio2.5",
"binary_version": "2.5.19.1+dfsg-2ubuntu0.1~esm1"
},
{
"binary_name": "openimageio-tools",
"binary_version": "2.5.19.1+dfsg-2ubuntu0.1~esm1"
},
{
"binary_name": "python3-openimageio",
"binary_version": "2.5.19.1+dfsg-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:26.04:LTS",
"name": "openimageio",
"purl": "pkg:deb/ubuntu/openimageio@2.5.19.1+dfsg-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
}
],
"aliases": [],
"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 crafted cineon image can declare unsupported component bit depth 26. cineoninput::open() maps it to a 32-bit imagespec, but libcineon maps the unsupported depth to an 8-byte value, so cineoninput::read_native_scanline() causes attacker-controlled data to be written beyond the 4-byte-per-pixel caller buffer, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/cineon.imageio/cineoninput.cpp, CineonInput::open(), CineonInput::read_native_scanline(), ComponentDataSize(), bit depth 26, and ImageSpec, 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.",
"id": "UBUNTU-CVE-2026-63638",
"modified": "2026-09-23T23:31:27Z",
"published": "2026-09-18T16:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-63638"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63638"
},
{
"type": "REPORT",
"url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-9hxv-jvgr-3x8g"
},
{
"type": "REPORT",
"url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5283"
},
{
"type": "REPORT",
"url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/6f2b2e85b3b3933ccc5a46303d5535f99bfa39fb"
},
{
"type": "REPORT",
"url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/6f2b2e85b3b3933ccc5a46303d5535f99bfa39fb"
},
{
"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"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-63638"
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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