DEBIAN-CVE-2026-12617
The issue is unexpected program termination based on ordering and/or specific content in responses to queries for CNAME or DNAME, and A records. Specifically, if a client queries for a DNAME and A record below the DNAME to the resolver, and the authoritative server responds positively to the A query but delays the DNAME response and later responds negatively, `named` may quit unexpectedly. Or, if a client queries for a CNAME and A record for the same name to the resolver, and the authoritative server responds positively to the A query but delays the CNAME response and later responds with a self-referential CNAME, the same failure may occur. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
DEBIAN-CVE-2026-12617
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-2026-12617
bind9
Source reference: /affected/0/package/name
- Affected versions
- 1:9.18.12-1
Source reference:
/affected/0/versions1:9.18.13-1Source reference:
/affected/0/versions1:9.18.16-1Source reference:
/affected/0/versions1:9.18.16-1~deb12u1Source reference:
/affected/0/versions1:9.18.16-1~deb12u1~bpo11+1Source reference:
/affected/0/versions1:9.18.19-1~deb12u1Source reference:
/affected/0/versions1:9.18.19-1~deb12u1~bpo11+1Source reference:
/affected/0/versions1:9.18.24-1Source reference:
/affected/0/versions1:9.18.24-1~bpo11+1Source reference:
/affected/0/versions1:9.18.28-1~deb12u1Source reference:
/affected/0/versions1:9.18.28-1~deb12u2Source reference:
/affected/0/versions1:9.18.33-1~deb12u2Source reference:
/affected/0/versions1:9.18.41-1~deb12u1Source reference:
/affected/0/versions1:9.18.44-1~deb12u1Source reference:
/affected/0/versions1:9.18.47-1~deb12u1Source reference:
/affected/0/versions1:9.18.49-1~deb12u1Source reference:
/affected/0/versions - Fixed versions
- 1:9.18.49-1~deb12u2
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
bind9
Source reference: /affected/1/package/name
- Affected versions
- 1:9.20.11-4
Source reference:
/affected/1/versions1:9.20.15-1Source reference:
/affected/1/versions1:9.20.15-1~deb13u1Source reference:
/affected/1/versions1:9.20.15-1~deb13u1~bpo12+1Source reference:
/affected/1/versions1:9.20.15-2Source reference:
/affected/1/versions1:9.20.18-1Source reference:
/affected/1/versions1:9.20.18-1~deb13u1Source reference:
/affected/1/versions1:9.20.18-1~deb13u1~bpo12+1Source reference:
/affected/1/versions1:9.20.19-1Source reference:
/affected/1/versions1:9.20.19-1~bpo12+1Source reference:
/affected/1/versions1:9.20.20-1Source reference:
/affected/1/versions1:9.20.20-1~bpo12+1Source reference:
/affected/1/versions1:9.20.21-1Source reference:
/affected/1/versions1:9.20.21-1~deb13u1Source reference:
/affected/1/versions1:9.20.21-1~deb13u1~bpo12+1Source reference:
/affected/1/versions1:9.20.22-1Source reference:
/affected/1/versions1:9.20.23-1Source reference:
/affected/1/versions1:9.20.23-1~deb13u1Source reference:
/affected/1/versions1:9.20.23-1~deb13u1~bpo12+1Source reference:
/affected/1/versions1:9.20.24-1Source reference:
/affected/1/versions1:9.20.26-1~deb13u1~bpo12+1Source reference:
/affected/1/versions - Fixed versions
- 1:9.20.26-1~deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
bind9
Source reference: /affected/2/package/name
- Affected versions
- 1:9.20.11-4
Source reference:
/affected/2/versions1:9.20.15-1Source reference:
/affected/2/versions1:9.20.15-1~deb13u1Source reference:
/affected/2/versions1:9.20.15-1~deb13u1~bpo12+1Source reference:
/affected/2/versions1:9.20.15-2Source reference:
/affected/2/versions1:9.20.18-1Source reference:
/affected/2/versions1:9.20.18-1~deb13u1Source reference:
/affected/2/versions1:9.20.18-1~deb13u1~bpo12+1Source reference:
/affected/2/versions1:9.20.19-1Source reference:
/affected/2/versions1:9.20.19-1~bpo12+1Source reference:
/affected/2/versions1:9.20.20-1Source reference:
/affected/2/versions1:9.20.20-1~bpo12+1Source reference:
/affected/2/versions1:9.20.21-1Source reference:
/affected/2/versions1:9.20.21-1~deb13u1Source reference:
/affected/2/versions1:9.20.21-1~deb13u1~bpo12+1Source reference:
/affected/2/versions1:9.20.22-1Source reference:
/affected/2/versions1:9.20.23-1Source reference:
/affected/2/versions1:9.20.23-1~deb13u1Source reference:
/affected/2/versions1:9.20.23-1~deb13u1~bpo12+1Source reference:
/affected/2/versions1:9.20.24-1Source reference:
/affected/2/versions1:9.20.26-1~deb13u1Source reference:
/affected/2/versions1:9.20.26-1~deb13u1~bpo12+1Source reference:
/affected/2/versions - Fixed versions
- 1:9.20.26-1
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"
},
{
"fixed": "1:9.18.49-1~deb12u2"
}
]
}
],
"package": {
"name": "bind9",
"purl": "pkg:deb/debian/bind9?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1:9.18.12-1",
"1:9.18.13-1",
"1:9.18.16-1",
"1:9.18.16-1~deb12u1",
"1:9.18.16-1~deb12u1~bpo11+1",
"1:9.18.19-1~deb12u1",
"1:9.18.19-1~deb12u1~bpo11+1",
"1:9.18.24-1",
"1:9.18.24-1~bpo11+1",
"1:9.18.28-1~deb12u1",
"1:9.18.28-1~deb12u2",
"1:9.18.33-1~deb12u2",
"1:9.18.41-1~deb12u1",
"1:9.18.44-1~deb12u1",
"1:9.18.47-1~deb12u1",
"1:9.18.49-1~deb12u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12617.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.20.26-1~deb13u1"
}
]
}
],
"package": {
"name": "bind9",
"purl": "pkg:deb/debian/bind9?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1:9.20.11-4",
"1:9.20.15-1",
"1:9.20.15-1~deb13u1",
"1:9.20.15-1~deb13u1~bpo12+1",
"1:9.20.15-2",
"1:9.20.18-1",
"1:9.20.18-1~deb13u1",
"1:9.20.18-1~deb13u1~bpo12+1",
"1:9.20.19-1",
"1:9.20.19-1~bpo12+1",
"1:9.20.20-1",
"1:9.20.20-1~bpo12+1",
"1:9.20.21-1",
"1:9.20.21-1~deb13u1",
"1:9.20.21-1~deb13u1~bpo12+1",
"1:9.20.22-1",
"1:9.20.23-1",
"1:9.20.23-1~deb13u1",
"1:9.20.23-1~deb13u1~bpo12+1",
"1:9.20.24-1",
"1:9.20.26-1~deb13u1~bpo12+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12617.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.20.26-1"
}
]
}
],
"package": {
"name": "bind9",
"purl": "pkg:deb/debian/bind9?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1:9.20.11-4",
"1:9.20.15-1",
"1:9.20.15-1~deb13u1",
"1:9.20.15-1~deb13u1~bpo12+1",
"1:9.20.15-2",
"1:9.20.18-1",
"1:9.20.18-1~deb13u1",
"1:9.20.18-1~deb13u1~bpo12+1",
"1:9.20.19-1",
"1:9.20.19-1~bpo12+1",
"1:9.20.20-1",
"1:9.20.20-1~bpo12+1",
"1:9.20.21-1",
"1:9.20.21-1~deb13u1",
"1:9.20.21-1~deb13u1~bpo12+1",
"1:9.20.22-1",
"1:9.20.23-1",
"1:9.20.23-1~deb13u1",
"1:9.20.23-1~deb13u1~bpo12+1",
"1:9.20.24-1",
"1:9.20.26-1~deb13u1",
"1:9.20.26-1~deb13u1~bpo12+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12617.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55493 · Revision 1
- Added to Heist Feed
- Publisher date