USN-8124-1

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Source
https://ubuntu.com/security/notices/USN-8124-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8124-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8124-1
Upstream
Related
Published
2026-03-25T16:32:48Z
Modified
2026-04-22T11:08:02.383386Z
Summary
bind9 vulnerabilities
Details

Samy Medjahed discovered that Bind incorrectly handled insecure delegation validation. A remote attacker could possibly use this issue to cause excessive NSEC3 iterations, consuming CPU resources, and leading to a denial of service. (CVE-2026-1519)

Vitaly Simonovich discovered that Bind incorrectly handled memory when preparing DNSSEC proofs of non-existence. A remote attacker could possibly use this issue to cause memory consumption, leading to a denial of service. This issue only affected Ubuntu 25.10. (CVE-2026-3104)

Vitaly Simonovich discovered that Bind incorrectly handled authenticated queries containing TKEY records. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 25.10. (CVE-2026-3119)

It was discovered that Bind incorrectly handled DNS queries signed with SIG(0). A remote attacker could possibly use this issue to bypass ACLs. This issue only affected Ubuntu 25.10. (CVE-2026-3591)

References

Affected packages

Ubuntu:22.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.18.39-0ubuntu0.22.04.3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.18.39-0ubuntu0.22.04.3

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:9.18.39-0ubuntu0.22.04.3",
            "binary_name": "bind9"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.22.04.3",
            "binary_name": "bind9-dnsutils"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.22.04.3",
            "binary_name": "bind9-host"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.22.04.3",
            "binary_name": "bind9-libs"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.22.04.3",
            "binary_name": "bind9-utils"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.22.04.3",
            "binary_name": "bind9utils"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.22.04.3",
            "binary_name": "dnsutils"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8124-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-1519",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.18.39-0ubuntu0.24.04.3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.18.39-0ubuntu0.24.04.3

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:9.18.39-0ubuntu0.24.04.3",
            "binary_name": "bind9"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.24.04.3",
            "binary_name": "bind9-dnsutils"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.24.04.3",
            "binary_name": "bind9-host"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.24.04.3",
            "binary_name": "bind9-libs"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.24.04.3",
            "binary_name": "bind9-utils"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.24.04.3",
            "binary_name": "bind9utils"
        },
        {
            "binary_version": "1:9.18.39-0ubuntu0.24.04.3",
            "binary_name": "dnsutils"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8124-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-1519",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:25.10 / bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9@1:9.20.11-1ubuntu2.2?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:9.20.11-1ubuntu2.2

Affected versions

1:9.*
1:9.20.4-3ubuntu1
1:9.20.4-3ubuntu2
1:9.20.4-3ubuntu3
1:9.20.9-2ubuntu1
1:9.20.10-1ubuntu1
1:9.20.11-1ubuntu1
1:9.20.11-1ubuntu2
1:9.20.11-1ubuntu2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:9.20.11-1ubuntu2.2",
            "binary_name": "bind9"
        },
        {
            "binary_version": "1:9.20.11-1ubuntu2.2",
            "binary_name": "bind9-dnsutils"
        },
        {
            "binary_version": "1:9.20.11-1ubuntu2.2",
            "binary_name": "bind9-host"
        },
        {
            "binary_version": "1:9.20.11-1ubuntu2.2",
            "binary_name": "bind9-libs"
        },
        {
            "binary_version": "1:9.20.11-1ubuntu2.2",
            "binary_name": "bind9-utils"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8124-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-1519",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-3104",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-3119",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-3591",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}