HighFix available
openimageio — security advisory
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed integer overflow in QueryRGBBufferSizeInternal() in DPXColorConverter.cpp leads to a heap-based out-of-bounds write when processing crafted DPX image files. The function computes buffer sizes using 32-bit signed integer arithmetic with negative multipliers (e.g., pixels * -3 * bytes for kCbYCr descriptors and pixels * -4 * bytes for kABGR descriptors), where a negative result is used as an in-band signal that no separate buffer is needed. When the pixel count is sufficiently large, the multiplication overflows INT_MIN and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a required buffer size, allocates an undersized heap buffer via m_decodebuf.resize(), and then writes the full image data into it via fread, resulting in a heap buffer overflow. An attacker can exploit this by crafting a DPX file that triggers the overflow, causing a denial of service (crash) or potentially arbitrary code execution through heap corruption in any application that reads pixel data using OpenImageIO. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
- Products
- openimageio
- Affected versions
- 1.5.17~dfsg0-1ubuntu2, 1.5.20~dfsg0-1ubuntu2, 1.5.23~dfsg0-1ubuntu1, 1.6.10~dfsg0-1ubuntu1, 1.6.10~dfsg0-2ubuntu1, 1.6.11~dfsg0-1ubuntu1, 1.6.17~dfsg0-1ubuntu5, 1.6.9~dfsg0-4ubuntu1, 1.7.17~dfsg0-1ubuntu2, 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, 2.2.10.1+dfsg-1build1, 2.2.18.0+dfsg-1, 2.2.18.0+dfsg-1build2, 2.2.18.0+dfsg-1ubuntu2, 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-1.1build3, 2.4.17.0+dfsg-1.1build4, 2.4.17.0+dfsg-1build1, 2.5.18.0+dfsg-1build1, 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-2build1, 2.5.19.1+dfsg-2build2
- Fixed versions
- 1.6.11~dfsg0-1ubuntu1+esm2, 1.7.17~dfsg0-1ubuntu2+esm1, 2.1.12.0~dfsg0-1ubuntu0.1~esm1, 2.4.17.0+dfsg-1.1ubuntu0.1~esm1, 2.5.19.1+dfsg-2ubuntu0.1~esm1
- CVEs
- CVE-2026-43907
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:04 UTC · Revision 1
Source evidence
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed integer overflow in QueryRGBBufferSizeInternal() in DPXColorConverter.cpp leads to a heap-based out-of-bounds write when processing crafted DPX image files. The function computes buffer sizes using 32-bit signed integer arithmetic with negative multipliers (e.g., pixels * -3 * bytes for kCbYCr descriptors and pixels * -4 * bytes for kABGR descriptors), where a negative result is used as an in-band signal that no separate buffer is needed. When the pixel count is sufficiently large, the multiplication overflows INT_MIN and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a required buffer size, allocates an undersized heap buffer via m_decodebuf.resize(), and then writes the full image data into it via fread, resulting in a heap buffer overflow. An attacker can exploit this by crafting a DPX file that triggers the overflow, causing a denial of service (crash) or potentially arbitrary code execution through heap corruption in any application that reads pixel data using OpenImageIO. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
osv:UBUNTU-CVE-2026-43907
openimageio
Fixed versions: 1.6.11~dfsg0-1ubuntu1+esm2
openimageio
Fixed versions: 1.7.17~dfsg0-1ubuntu2+esm1
openimageio
Fixed versions: 2.1.12.0~dfsg0-1ubuntu0.1~esm1
openimageio
Fixed versions: Not specified
openimageio
Fixed versions: 2.4.17.0+dfsg-1.1ubuntu0.1~esm1
openimageio
Fixed versions: Not specified
openimageio
Fixed versions: Not specified
openimageio
Fixed versions: 2.5.19.1+dfsg-2ubuntu0.1~esm1
Complete source record
{
"id": "c7ab45366c06808bd7287801524fda84d906219d753252ae54116bd23d798593",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-43907",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2026-43907",
"summary": "OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed integer overflow in QueryRGBBufferSizeInternal() in DPXColorConverter.cpp leads to a heap-based out-of-bounds write when processing crafted DPX image files. The function computes buffer sizes using 32-bit signed integer arithmetic with negative multipliers (e.g., pixels * -3 * bytes for kCbYCr descriptors and pixels * -4 * bytes for kABGR descriptors), where a negative result is used as an in-band signal that no separate buffer is needed. When the pixel count is sufficiently large, the multiplication overflows INT_MIN and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a required buffer size, allocates an undersized heap buffer via m_decodebuf.resize(), and then writes the full image data into it via fread, resulting in a heap buffer overflow. An attacker can exploit this by crafting a DPX file that triggers the overflow, causing a denial of service (crash) or potentially arbitrary code execution through heap corruption in any application that reads pixel data using OpenImageIO. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.",
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"value": "2.2.18.0+dfsg-1",
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{
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},
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},
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},
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"binaries": [
{
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},
{
"binary_name": "openimageio-tools",
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{
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}
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],
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"name": "openimageio",
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"2.5.19.1+dfsg-1build1",
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"2.5.19.1+dfsg-1build5",
"2.5.19.1+dfsg-2"
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"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43907.json"
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"binaries": [
{
"binary_name": "libopenimageio2.5",
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{
"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"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
}
],
"modified": "2026-10-17T13:00:08.254299894Z",
"provider": "osv",
"upstream": [
"CVE-2026-43907"
],
"references": [
"https://ubuntu.com/security/CVE-2026-43907",
"https://www.cve.org/CVERecord?id=CVE-2026-43907",
"https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-cq46-hp4h-cvfr"
]
},
"related_cves": [
{
"value": "CVE-2026-43907",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360341,
"published_at": "2026-05-14T20:17:00+00:00"
}