UBUNTU-CVE-2026-42002

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Source
https://ubuntu.com/security/CVE-2026-42002
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-42002
Upstream
Published
2026-05-21T10:16:00Z
Modified
2026-05-27T19:15:22Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Concurrency and locking defects in GSS-TSIG

References

Affected packages

Ubuntu:24.04:LTS
pdns

Package

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

Affected ranges

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

Affected versions

4.*
4.8.1-1build1
4.8.3-2
4.8.3-2build1
4.8.3-3
4.8.3-4
4.8.3-4build2
4.8.3-4build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pdns-backend-bind",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-lmdb",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-lua2",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-odbc",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-remote",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-ixfrdist",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-server",
            "binary_version": "4.8.3-4build3"
        },
        {
            "binary_name": "pdns-tools",
            "binary_version": "4.8.3-4build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json"
Ubuntu:25.10
pdns

Package

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

Affected ranges

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

Affected versions

4.*
4.9.4-2
4.9.7-1
4.9.7-1build2
5.*
5.0.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pdns-backend-bind",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-lmdb",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-lua2",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-odbc",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-remote",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-ixfrdist",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-server",
            "binary_version": "5.0.0-2"
        },
        {
            "binary_name": "pdns-tools",
            "binary_version": "5.0.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json"
Ubuntu:26.04:LTS
pdns

Package

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

Affected ranges

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

Affected versions

5.*
5.0.0-2
5.0.1-1
5.0.2-1
5.0.2-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pdns-backend-bind",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-lmdb",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-lua2",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-odbc",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-remote",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-ixfrdist",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-server",
            "binary_version": "5.0.2-1build1"
        },
        {
            "binary_name": "pdns-tools",
            "binary_version": "5.0.2-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json"
Ubuntu:Pro:16.04:LTS
pdns

Package

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

Affected ranges

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

Affected versions

3.*
3.4.5-1build2
3.4.6-2
3.4.6-3
3.4.7-1
3.4.7-2
4.*
4.0.0~alpha1-1
4.0.0~alpha2-2
4.0.0~alpha2-3
4.0.0~alpha2-3build1
4.0.0~alpha2-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-lua",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-mydns",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-remote",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-server",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-tools",
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json"
Ubuntu:Pro:18.04:LTS
pdns

Package

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

Affected ranges

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

Affected versions

4.*
4.0.4-2
4.0.4-2build1
4.0.5-1
4.1.0-1
4.1.0-2
4.1.0-2build1
4.1.1-1
4.1.1-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pdns-backend-bind",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-lua",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-mydns",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-odbc",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-opendbx",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-remote",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-server",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-tools",
            "binary_version": "4.1.1-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json"
Ubuntu:Pro:20.04:LTS
pdns

Package

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

Affected ranges

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

Affected versions

4.*
4.1.6-3build1
4.2.0-1
4.2.1-1
4.2.1-1build1
4.2.1-1build2
4.2.1-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pdns-backend-bind",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-lua",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-mydns",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-odbc",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-remote",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-ixfrdist",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-server",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-tools",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json"
Ubuntu:Pro:22.04:LTS
pdns

Package

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

Affected ranges

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

Affected versions

4.*
4.4.1-1build1
4.4.1-3
4.4.1-4
4.5.2-1build1
4.5.3-1
4.5.3-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pdns-backend-bind",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-geoip",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-ldap",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-lmdb",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-lua2",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-mysql",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-odbc",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pgsql",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-pipe",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-remote",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-sqlite3",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-backend-tinydns",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-ixfrdist",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-server",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "pdns-tools",
            "binary_version": "4.5.3-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42002.json"