USN-8696-1

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Source
https://ubuntu.com/security/notices/USN-8696-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8696-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8696-1
Upstream
Related
Published
2026-08-31T11:32:15Z
Modified
2026-08-31T17:26:23Z
Summary
bind9 vulnerability
Details

It was discovered that Bind incorrectly handled DNSSEC validation when a domain was covered by both NSEC and NSEC3 records with only one type having an RRSIG. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:22.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.18.39-0ubuntu0.22.04.6

Affected versions

1:9.*
1:9.16.15-1ubuntu1
1:9.16.15-1ubuntu2
1:9.16.15-1ubuntu3
1:9.18.0-2ubuntu1
1:9.18.0-2ubuntu2
1:9.18.0-2ubuntu3
1:9.18.1-1ubuntu1
1:9.18.1-1ubuntu1.1
1:9.18.1-1ubuntu1.2
1:9.18.1-1ubuntu1.3
1:9.18.12-0ubuntu0.22.04.1
1:9.18.12-0ubuntu0.22.04.2
1:9.18.12-0ubuntu0.22.04.3
1:9.18.18-0ubuntu0.22.04.1
1:9.18.18-0ubuntu0.22.04.2
1:9.18.24-0ubuntu0.22.04.1
1:9.18.28-0ubuntu0.22.04.1
1:9.18.30-0ubuntu0.22.04.1
1:9.18.30-0ubuntu0.22.04.2
1:9.18.39-0ubuntu0.22.04.1
1:9.18.39-0ubuntu0.22.04.2
1:9.18.39-0ubuntu0.22.04.3
1:9.18.39-0ubuntu0.22.04.4
1:9.18.39-0ubuntu0.22.04.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
        },
        {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
        },
        {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
        },
        {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.6"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-13204",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8696-1.json"

Ubuntu:24.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.18.39-0ubuntu0.24.04.7

Affected versions

1:9.*
1:9.18.18-0ubuntu2
1:9.18.21-0ubuntu1
1:9.18.24-0ubuntu3
1:9.18.24-0ubuntu4
1:9.18.24-0ubuntu5
1:9.18.28-0ubuntu0.24.04.1
1:9.18.30-0ubuntu0.24.04.1
1:9.18.30-0ubuntu0.24.04.2
1:9.18.39-0ubuntu0.24.04.1
1:9.18.39-0ubuntu0.24.04.2
1:9.18.39-0ubuntu0.24.04.3
1:9.18.39-0ubuntu0.24.04.5
1:9.18.39-0ubuntu0.24.04.6

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
        },
        {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
        },
        {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
        },
        {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
        },
        {
            "binary_name": "bind9utils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
        },
        {
            "binary_name": "dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.7"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-13204",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8696-1.json"

Ubuntu:26.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.20.24-1ubuntu0.3

Affected versions

1:9.*
1:9.20.11-1ubuntu2
1:9.20.11-1ubuntu3
1:9.20.18-1ubuntu1
1:9.20.18-1ubuntu2
1:9.20.18-1ubuntu2.1
1:9.20.24-1ubuntu0.1
1:9.20.24-1ubuntu0.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bind9",
            "binary_version": "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name": "bind9-host",
            "binary_version": "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.20.24-1ubuntu0.3"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-13204",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8696-1.json"