UBUNTU-CVE-2026-115921

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Source
https://ubuntu.com/security/CVE-2026-115921
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115921.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-115921
Upstream
Published
2026-10-26T18:17:00Z
Modified
2026-10-28T20:17:45Z
Severity
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.4.0 until 1.22.0, ScanInferenceFunction, ScanInferenceFunction_opset8, and ScanInferenceFunction_opset9 do not safely validate the required num_scan_inputs attribute. A missing attribute is dereferenced as a null pointer, while a negative value is converted to size_t and can reach an exceptional oversized allocation path. An untrusted model can therefore terminate or disrupt shape inference, including a negative-value model that can pass onnx.checker.check_model(). This issue is fixed in version 1.22.0.

References

Affected packages

Ubuntu:22.04:LTS / onnx

Package

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

Affected ranges

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

Affected versions

1.*
1.7.0+dfsg-3build1
1.7.0+dfsg-3build2
1.7.0+dfsg-3ubuntu1
1.7.0+dfsg-3ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libonnx-testdata",
            "binary_version":  "1.7.0+dfsg-3ubuntu2"
        },
        {
            "binary_name":  "libonnx1",
            "binary_version":  "1.7.0+dfsg-3ubuntu2"
        },
        {
            "binary_name":  "libonnxifi",
            "binary_version":  "1.7.0+dfsg-3ubuntu2"
        },
        {
            "binary_name":  "python3-onnx",
            "binary_version":  "1.7.0+dfsg-3ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115921.json"

Ubuntu:Pro:24.04:LTS / onnx

Package

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

Affected ranges

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

Affected versions

1.*
1.13.1-3
1.13.1-3build1
1.14.1-2
1.14.1-2.1
1.14.1-2.1build1
1.14.1-2.1build2
1.14.1-2.1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libonnx-testdata",
            "binary_version":  "1.14.1-2.1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libonnx1t64",
            "binary_version":  "1.14.1-2.1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "python3-onnx",
            "binary_version":  "1.14.1-2.1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115921.json"

Ubuntu:26.10 / onnx

Package

Name
onnx
Purl
pkg:deb/ubuntu/onnx?arch=source&distro=stonking

Affected ranges

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

Affected versions

1.*
1.20.0-1
1.20.0-6

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libonnx-testdata",
            "binary_version":  "1.20.0-6"
        },
        {
            "binary_name":  "libonnx1l",
            "binary_version":  "1.20.0-6"
        },
        {
            "binary_name":  "python3-onnx",
            "binary_version":  "1.20.0-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115921.json"

Ubuntu:26.04:LTS / onnx

Package

Name
onnx
Purl
pkg:deb/ubuntu/onnx?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.17.0-3build1
1.20.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libonnx-testdata",
            "binary_version":  "1.20.0-1"
        },
        {
            "binary_name":  "libonnx1t64",
            "binary_version":  "1.20.0-1"
        },
        {
            "binary_name":  "python3-onnx",
            "binary_version":  "1.20.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115921.json"