ubuntu-cve-2026-42002
Vulnerability from osv_ubuntu
Published
2026-05-21 10:16
Modified
2026-05-27 19:09
Summary
Details
Concurrency and locking defects in GSS-TSIG
Severity
5.9 (Medium)
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
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{
"binary_name": "pdns-backend-geoip",
"binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
},
{
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},
{
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},
{
"binary_name": "pdns-backend-mydns",
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},
{
"binary_name": "pdns-backend-mysql",
"binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
},
{
"binary_name": "pdns-backend-pgsql",
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},
{
"binary_name": "pdns-backend-pipe",
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},
{
"binary_name": "pdns-backend-remote",
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},
{
"binary_name": "pdns-backend-sqlite3",
"binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1"
},
{
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},
{
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},
{
"binary_name": "pdns-tools",
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}
]
},
"package": {
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},
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{
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"4.0.0~alpha2-2",
"4.0.0~alpha2-3",
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]
},
{
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},
{
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},
{
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},
{
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},
{
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},
{
"binary_name": "pdns-backend-mysql",
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},
{
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{
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{
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{
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{
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},
{
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},
{
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},
{
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},
{
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]
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},
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"4.1.1-1",
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]
},
{
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{
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},
{
"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",
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},
{
"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"
},
{
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"binary_version": "4.2.1-1ubuntu0.1~esm1"
},
{
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}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "pdns",
"purl": "pkg:deb/ubuntu/pdns@4.2.1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
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{
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}
],
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],
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]
},
{
"ecosystem_specific": {
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{
"binary_name": "pdns-backend-bind",
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},
{
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{
"binary_name": "pdns-backend-ldap",
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},
{
"binary_name": "pdns-backend-lmdb",
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},
{
"binary_name": "pdns-backend-lua2",
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},
{
"binary_name": "pdns-backend-mysql",
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},
{
"binary_name": "pdns-backend-odbc",
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{
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{
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{
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},
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"name": "pdns",
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},
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},
{
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},
{
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{
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{
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{
"binary_name": "pdns-backend-sqlite3",
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{
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{
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{
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},
"package": {
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},
{
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{
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{
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{
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{
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},
{
"ecosystem_specific": {
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{
"binary_name": "pdns-backend-bind",
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{
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"binary_version": "5.0.2-1build1"
},
{
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},
{
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{
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{
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{
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},
{
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},
{
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{
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},
{
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},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "pdns",
"purl": "pkg:deb/ubuntu/pdns@5.0.2-1build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
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{
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}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.0.0-2",
"5.0.1-1",
"5.0.2-1",
"5.0.2-1build1"
]
}
],
"aliases": [],
"details": "Concurrency and locking defects in GSS-TSIG",
"id": "UBUNTU-CVE-2026-42002",
"modified": "2026-05-27T19:09:51Z",
"published": "2026-05-21T10:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-42002"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-42002"
},
{
"type": "REPORT",
"url": "https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-06.html#concurrency-and-locking-defects-in-gss-tsig"
},
{
"type": "REPORT",
"url": "https://github.com/PowerDNS/pdns/commit/27c388790cb49a11229732ee658c047bcdec9c96"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"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"
}
],
"upstream": [
"CVE-2026-42002"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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