UBUNTU-CVE-2026-101337

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Source

https://ubuntu.com/security/CVE-2026-101337

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-101337

Upstream

CVE-2026-101337

Published

2026-10-15T00:00:00Z

Modified

2026-10-17T12:57:54Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).

References

Affected packages

Ubuntu:26.10

nsd

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.14.0-1

4.14.2-1

4.14.3-1

4.15.0-1

4.15.0-1build1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "nsd",
            "binary_version":  "4.15.0-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.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

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.1.2-1

4.1.6-1

4.1.7-1

4.1.7-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "nsd",
            "binary_version":  "4.1.7-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "nsd3",
            "binary_version":  "4.1.7-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.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

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.1.16-1build1

4.1.17-1

4.1.17-1build1

4.1.17-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "nsd",
            "binary_version":  "4.1.17-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.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

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.1.26-1

4.1.26-1build1

4.1.26-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "nsd",
            "binary_version":  "4.1.26-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.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

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.3.5-1

4.3.7-1

4.3.8-1

4.3.8-1build1

4.3.9-1

4.3.9-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "nsd",
            "binary_version":  "4.3.9-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.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

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.7.0-1

4.8.0-1

4.8.0-1build1

4.8.0-1build3

4.8.0-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "nsd",
            "binary_version":  "4.8.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.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

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.12.0-1

4.13.0-6

4.14.0-1

4.14.0-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "nsd",
            "binary_version":  "4.14.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101337.json"