DEBIAN-CVE-2026-18916
Any remote client can crash a NSD serve child, by throttling the TCP receive window after a TCP query. By continuously crashing the serve childs, the remote client can denial all TCP service to this NSD instance.
DEBIAN-CVE-2026-18916
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-18916
nsd
Source reference: /affected/0/package/name
- Affected versions
- 4.10.1-1
Source reference:
/affected/0/versions4.10.1~rc2-1Source reference:
/affected/0/versions4.10.1~rc2-2Source reference:
/affected/0/versions4.11.0-1Source reference:
/affected/0/versions4.11.1-1Source reference:
/affected/0/versions4.12.0-1Source reference:
/affected/0/versions4.12.0-2Source reference:
/affected/0/versions4.13.0-1Source reference:
/affected/0/versions4.13.0-2Source reference:
/affected/0/versions4.13.0-3Source reference:
/affected/0/versions4.13.0-4Source reference:
/affected/0/versions4.13.0-5Source reference:
/affected/0/versions4.13.0-6Source reference:
/affected/0/versions4.14.0-1Source reference:
/affected/0/versions4.14.1-1Source reference:
/affected/0/versions4.14.2-1Source reference:
/affected/0/versions4.14.3-1Source reference:
/affected/0/versions4.15.0-1Source reference:
/affected/0/versions4.15.0~rc1-1Source reference:
/affected/0/versions4.15.1-1Source reference:
/affected/0/versions4.15.2-1Source reference:
/affected/0/versions4.6.1-1Source reference:
/affected/0/versions4.7.0-1Source reference:
/affected/0/versions4.8.0-1Source reference:
/affected/0/versions4.9.1-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
nsd
Source reference: /affected/1/package/name
- Affected versions
- 4.12.0-1
Source reference:
/affected/1/versions4.12.0-2Source reference:
/affected/1/versions4.13.0-1Source reference:
/affected/1/versions4.13.0-2Source reference:
/affected/1/versions4.13.0-3Source reference:
/affected/1/versions4.13.0-4Source reference:
/affected/1/versions4.13.0-5Source reference:
/affected/1/versions4.13.0-6Source reference:
/affected/1/versions4.14.0-1Source reference:
/affected/1/versions4.14.1-1Source reference:
/affected/1/versions4.14.2-1Source reference:
/affected/1/versions4.14.3-1Source reference:
/affected/1/versions4.15.0-1Source reference:
/affected/1/versions4.15.0~rc1-1Source reference:
/affected/1/versions4.15.1-1Source reference:
/affected/1/versions4.15.2-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
nsd
Source reference: /affected/2/package/name
- Affected versions
- 4.12.0-1
Source reference:
/affected/2/versions4.12.0-2Source reference:
/affected/2/versions4.13.0-1Source reference:
/affected/2/versions4.13.0-2Source reference:
/affected/2/versions4.13.0-3Source reference:
/affected/2/versions4.13.0-4Source reference:
/affected/2/versions4.13.0-5Source reference:
/affected/2/versions4.13.0-6Source reference:
/affected/2/versions4.14.0-1Source reference:
/affected/2/versions4.14.1-1Source reference:
/affected/2/versions4.14.2-1Source reference:
/affected/2/versions4.14.3-1Source reference:
/affected/2/versions4.15.0-1Source reference:
/affected/2/versions4.15.0~rc1-1Source reference:
/affected/2/versions - Fixed versions
- 4.15.1-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/debian/nsd?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.10.1-1",
"4.10.1~rc2-1",
"4.10.1~rc2-2",
"4.11.0-1",
"4.11.1-1",
"4.12.0-1",
"4.12.0-2",
"4.13.0-1",
"4.13.0-2",
"4.13.0-3",
"4.13.0-4",
"4.13.0-5",
"4.13.0-6",
"4.14.0-1",
"4.14.1-1",
"4.14.2-1",
"4.14.3-1",
"4.15.0-1",
"4.15.0~rc1-1",
"4.15.1-1",
"4.15.2-1",
"4.6.1-1",
"4.7.0-1",
"4.8.0-1",
"4.9.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18916.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/debian/nsd?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.12.0-1",
"4.12.0-2",
"4.13.0-1",
"4.13.0-2",
"4.13.0-3",
"4.13.0-4",
"4.13.0-5",
"4.13.0-6",
"4.14.0-1",
"4.14.1-1",
"4.14.2-1",
"4.14.3-1",
"4.15.0-1",
"4.15.0~rc1-1",
"4.15.1-1",
"4.15.2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18916.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.15.1-1"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/debian/nsd?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.12.0-1",
"4.12.0-2",
"4.13.0-1",
"4.13.0-2",
"4.13.0-3",
"4.13.0-4",
"4.13.0-5",
"4.13.0-6",
"4.14.0-1",
"4.14.1-1",
"4.14.2-1",
"4.14.3-1",
"4.15.0-1",
"4.15.0~rc1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-18916.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56168 · Revision 1
- Added to Heist Feed
- Publisher date