DEBIAN-CVE-2026-11605

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Source
https://security-tracker.debian.org/tracker/CVE-2026-11605
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11605.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-11605
Upstream
  • CVE-2026-11605
Published
2026-07-22T15:16:51Z
Modified
2026-09-14T17:01:25Z
Severity
  • 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
Summary
[none]
Details

The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.

References

Affected packages

Debian:12 / bind9

Package

Name
bind9
Purl
pkg:deb/debian/bind9?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.18.49-1~deb12u2

Affected versions

1:9.*
1:9.18.12-1
1:9.18.13-1
1:9.18.16-1~deb12u1~bpo11+1
1:9.18.16-1~deb12u1
1:9.18.16-1
1:9.18.19-1~deb12u1~bpo11+1
1:9.18.19-1~deb12u1
1:9.18.24-1~bpo11+1
1:9.18.24-1
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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11605.json"

Debian:13 / bind9

Package

Name
bind9
Purl
pkg:deb/debian/bind9?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.20.26-1~deb13u1

Affected versions

1:9.*
1:9.20.11-4
1:9.20.15-1~deb13u1~bpo12+1
1:9.20.15-1~deb13u1
1:9.20.15-1
1:9.20.15-2
1:9.20.18-1~deb13u1~bpo12+1
1:9.20.18-1~deb13u1
1:9.20.18-1
1:9.20.19-1~bpo12+1
1:9.20.19-1
1:9.20.20-1~bpo12+1
1:9.20.20-1
1:9.20.21-1~deb13u1~bpo12+1
1:9.20.21-1~deb13u1
1:9.20.21-1
1:9.20.22-1
1:9.20.23-1~deb13u1~bpo12+1
1:9.20.23-1~deb13u1
1:9.20.23-1
1:9.20.24-1
1:9.20.26-1~deb13u1~bpo12+1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11605.json"

Debian:14 / bind9

Package

Name
bind9
Purl
pkg:deb/debian/bind9?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.20.26-1

Affected versions

1:9.*
1:9.20.11-4
1:9.20.15-1~deb13u1~bpo12+1
1:9.20.15-1~deb13u1
1:9.20.15-1
1:9.20.15-2
1:9.20.18-1~deb13u1~bpo12+1
1:9.20.18-1~deb13u1
1:9.20.18-1
1:9.20.19-1~bpo12+1
1:9.20.19-1
1:9.20.20-1~bpo12+1
1:9.20.20-1
1:9.20.21-1~deb13u1~bpo12+1
1:9.20.21-1~deb13u1
1:9.20.21-1
1:9.20.22-1
1:9.20.23-1~deb13u1~bpo12+1
1:9.20.23-1~deb13u1
1:9.20.23-1
1:9.20.24-1
1:9.20.26-1~deb13u1~bpo12+1
1:9.20.26-1~deb13u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11605.json"