UBUNTU-CVE-2026-128239

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Source
https://ubuntu.com/security/CVE-2026-128239
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-128239.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-128239
Upstream
Published
2026-11-13T00:00:00Z
Modified
2026-11-13T21:05:41Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • 6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

GPAC through 26.07.0 contains a NULL pointer dereference vulnerability in the MPEG-4 Form spatial-constraint handlers in src/compositor/mpeg4_form.c that lets attackers crash the process via unchecked group lookups. Attackers can supply a crafted XMT scene whose Form constraints reference a non-existent group, crashing tools like MP4Box during chapter import for denial of service.

References

Affected packages

Ubuntu:Pro:14.04:LTS
gpac

Package

Name
gpac
Purl
pkg:deb/ubuntu/gpac?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

0.*
0.5.0+svn4288~dfsg1-1ubuntu1
0.5.0+svn4288~dfsg1-4
0.5.0+svn4288~dfsg1-4ubuntu1
0.5.0+svn4288~dfsg1-4ubuntu1+esm1
0.5.0+svn4288~dfsg1-4ubuntu1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gpac",
            "binary_version": "0.5.0+svn4288~dfsg1-4ubuntu1+esm2"
        },
        {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.0+svn4288~dfsg1-4ubuntu1+esm2"
        },
        {
            "binary_name": "libgpac2",
            "binary_version": "0.5.0+svn4288~dfsg1-4ubuntu1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-128239.json"
Ubuntu:Pro:16.04:LTS
gpac

Package

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

Affected ranges

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

Affected versions

0.*
0.5.2-426-gc5ad4e4+dfsg5-1build1
0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1
0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gpac",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"
        },
        {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"
        },
        {
            "binary_name": "libgpac4",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-128239.json"
Ubuntu:Pro:18.04:LTS
gpac

Package

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

Affected ranges

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

Affected versions

0.*
0.5.2-426-gc5ad4e4+dfsg5-3
0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1
0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gpac",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"
        },
        {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"
        },
        {
            "binary_name": "libgpac4",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-128239.json"
Ubuntu:Pro:20.04:LTS
gpac

Package

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

Affected ranges

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

Affected versions

0.*
0.5.2-426-gc5ad4e4+dfsg5-4ubuntu1
0.5.2-426-gc5ad4e4+dfsg5-5
0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gpac",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "gpac-modules-base",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "libgpac4",
            "binary_version": "0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-128239.json"
Ubuntu:Pro:22.04:LTS
gpac

Package

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

Affected ranges

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

Affected versions

1.*
1.0.1+dfsg1-4
1.0.1+dfsg1-5
2.*
2.0.0+dfsg1-2
2.0.0+dfsg1-2ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gpac",
            "binary_version": "2.0.0+dfsg1-2ubuntu0.1~esm2"
        },
        {
            "binary_name": "gpac-modules-base",
            "binary_version": "2.0.0+dfsg1-2ubuntu0.1~esm2"
        },
        {
            "binary_name": "libgpac11",
            "binary_version": "2.0.0+dfsg1-2ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-128239.json"
Ubuntu:Pro:24.04:LTS
gpac

Package

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

Affected ranges

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

Affected versions

2.*
2.2.1+dfsg1-3
2.2.1+dfsg1-3.1
2.2.1+dfsg1-3.1build1
2.2.1+dfsg1-3.1build2
2.2.1+dfsg1-3.1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gpac",
            "binary_version": "2.2.1+dfsg1-3.1ubuntu0.1~esm2"
        },
        {
            "binary_name": "gpac-modules-base",
            "binary_version": "2.2.1+dfsg1-3.1ubuntu0.1~esm2"
        },
        {
            "binary_name": "libgpac12t64",
            "binary_version": "2.2.1+dfsg1-3.1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-128239.json"