UBUNTU-CVE-2026-63638

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Source
https://ubuntu.com/security/CVE-2026-63638
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63638.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-63638
Upstream
Published
2026-09-21T00:00:00Z
Modified
2026-09-21T21:39:52Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/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 3.0.21.0, 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.

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-2026-63638.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-2026-63638.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-2026-63638.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-2026-63638.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-2026-63638.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-2026-63638.json"