UBUNTU-CVE-2026-33602

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Source

https://ubuntu.com/security/CVE-2026-33602

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33602

Upstream

CVE-2026-33602

Published

2026-04-22T14:16:00Z

Modified

2026-05-20T16:25:30.063890950Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.

References

Affected packages

Ubuntu:16.04:LTS

dnsdist

Package

Name: dnsdist
Purl: pkg:deb/ubuntu/dnsdist?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.0~alpha2-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "dnsdist",
            "binary_version": "1.0.0~alpha2-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json"

Ubuntu:25.10

dnsdist

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.9.8-1

1.9.10-1

1.9.10-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "dnsdist",
            "binary_version": "1.9.10-1ubuntu0.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json"

Ubuntu:26.04:LTS

dnsdist

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.9.10-1

2.*

2.0.1-1

2.0.2-1

2.0.2-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "dnsdist",
            "binary_version": "2.0.2-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json"

Ubuntu:Pro:18.04:LTS

dnsdist

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.2.0-1

1.2.0-3

1.2.1-1

1.2.1-1build1

1.2.1-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "dnsdist",
            "binary_version": "1.2.1-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json"

Ubuntu:Pro:20.04:LTS

dnsdist

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.4.0~rc3-1

1.4.0-1

1.4.0-1build1

1.4.0-1build2

1.4.0-1ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "dnsdist",
            "binary_version": "1.4.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json"

Ubuntu:Pro:22.04:LTS

dnsdist

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.5.1-3build2

1.6.1-1build1

1.6.1-1ubuntu0.1~esm1

1.6.1-1ubuntu0.1~esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "dnsdist",
            "binary_version": "1.6.1-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json"

Ubuntu:Pro:24.04:LTS

dnsdist

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.8.0-1

1.8.2-1

1.8.2-2

1.8.2-3

1.8.3-1

1.8.3-2

1.8.3-2build1

1.8.3-2build2

1.8.3-2ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "dnsdist",
            "binary_version": "1.8.3-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33602.json"