DEBIAN-CVE-2026-11622

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Source
https://security-tracker.debian.org/tracker/CVE-2026-11622
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11622.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-11622
Upstream
  • CVE-2026-11622
Published
2026-07-22T15:16:51Z
Modified
2026-09-14T17:01:38Z
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

A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the limit configured in the max-cache-size parameter. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, 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-2026-11622.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-2026-11622.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-2026-11622.json"