UBUNTU-CVE-2026-12246

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Source
https://ubuntu.com/security/CVE-2026-12246
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-12246
Upstream
  • CVE-2026-12246
Downstream
Related
Published
2026-06-25T00:00:00Z
Modified
2026-06-29T13:56:27.130983244Z
Severity
  • 7.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes.

References

Affected packages

Ubuntu:25.10
nsd

Package

Name
nsd
Purl
pkg:deb/ubuntu/nsd?arch=source&distro=questing

Affected ranges

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

Affected versions

4.*
4.11.1-1
4.12.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.12.0-1",
            "binary_name": "nsd"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json"
Ubuntu:Pro:16.04:LTS
nsd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.1.7-1ubuntu0.1~esm1

Affected versions

4.*
4.1.2-1
4.1.6-1
4.1.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.1.7-1ubuntu0.1~esm1",
            "binary_name": "nsd"
        },
        {
            "binary_version": "4.1.7-1ubuntu0.1~esm1",
            "binary_name": "nsd3"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json"
Ubuntu:Pro:18.04:LTS
nsd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.1.17-1ubuntu0.1~esm1

Affected versions

4.*
4.1.16-1build1
4.1.17-1
4.1.17-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.1.17-1ubuntu0.1~esm1",
            "binary_name": "nsd"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json"
Ubuntu:Pro:20.04:LTS
nsd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.1.26-1ubuntu0.1~esm1

Affected versions

4.*
4.1.26-1
4.1.26-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.1.26-1ubuntu0.1~esm1",
            "binary_name": "nsd"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json"
Ubuntu:Pro:22.04:LTS
nsd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.3.9-1ubuntu0.1~esm1

Affected versions

4.*
4.3.5-1
4.3.7-1
4.3.8-1
4.3.8-1build1
4.3.9-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.3.9-1ubuntu0.1~esm1",
            "binary_name": "nsd"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json"
Ubuntu:Pro:24.04:LTS
nsd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.0-1ubuntu0.1~esm1

Affected versions

4.*
4.7.0-1
4.8.0-1
4.8.0-1build1
4.8.0-1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.8.0-1ubuntu0.1~esm1",
            "binary_name": "nsd"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json"
Ubuntu:Pro:26.04:LTS
nsd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.14.0-1ubuntu0.1~esm1

Affected versions

4.*
4.12.0-1
4.13.0-6
4.14.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.14.0-1ubuntu0.1~esm1",
            "binary_name": "nsd"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-12246.json"