UBUNTU-CVE-2026-59956

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Source
https://ubuntu.com/security/CVE-2026-59956
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59956.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-59956
Upstream
Published
2026-09-21T00:00:00Z
Modified
2026-09-21T21:39:52Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1, An uncompressed 16-bit iff image with a z-buffer makes iffinput::readimg() allocate a temporary scanline from m_header.rgba_count but copy from it using m_header.pixel_bytes(), whose stride also includes z-buffer bytes. the oversized memcpy reads beyond the temporary heap buffer and copies adjacent memory into the output image, resulting in a crash or disclosure of adjacent heap data. The affected implementation is identified by src/iff.imageio/iffinput.cpp, IffInput::readimg(), m_header.rgba_count, and m_header.pixel_bytes(), which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1.

References

Affected packages

Ubuntu:22.04:LTS
openimageio

Package

Name
openimageio
Purl
pkg:deb/ubuntu/openimageio?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
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": "libopenimageio2.2",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59956.json"
Ubuntu:Pro:16.04:LTS
openimageio

Package

Name
openimageio
Purl
pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
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-2026-59956.json"
Ubuntu:Pro:18.04:LTS
openimageio

Package

Name
openimageio
Purl
pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
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-2026-59956.json"
Ubuntu:Pro:20.04:LTS
openimageio

Package

Name
openimageio
Purl
pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
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-2026-59956.json"
Ubuntu:Pro:24.04:LTS
openimageio

Package

Name
openimageio
Purl
pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
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-2026-59956.json"
Ubuntu:Pro:26.04:LTS
openimageio

Package

Name
openimageio
Purl
pkg:deb/ubuntu/openimageio?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
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_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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59956.json"