DEBIAN-CVE-2026-81563

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Source

https://security-tracker.debian.org/tracker/CVE-2026-81563

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-81563.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-81563

Upstream

CVE-2026-81563

Published

2026-09-16T14:17:10Z

Modified

2026-09-17T05:00:22Z

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 BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

References

https://security-tracker.debian.org/tracker/CVE-2026-81563

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

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

1:9.18.49-1~deb12u2

1:9.19.6-1

1:9.19.6-2

1:9.19.10-1

1:9.19.11-1

1:9.19.14-1

1:9.19.17-1

1:9.19.19-1

1:9.19.21-1

1:9.19.24-2

1:9.19.24-185-g392e7199df2-1

1:9.20.0-1

1:9.20.0-2

1:9.20.1-1

1:9.20.2-1

1:9.20.3-1

1:9.20.4-2

1:9.20.4-3

1:9.20.4-4

1:9.20.5-1

1:9.20.7-1

1:9.20.8-1

1:9.20.8-2

1:9.20.8-3

1:9.20.8-4

1:9.20.8-5

1:9.20.8-6

1:9.20.9-1

1:9.20.9-2

1:9.20.10-1

1:9.20.11-1

1:9.20.11-2

1:9.20.11-3

1:9.20.11-4~bpo12+1

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

1:9.20.26-1

1:9.20.27-1

1:9.20.27-2

1:9.20.29-1

1:9.21.0-1

1:9.21.1-1

1:9.21.3-1

1:9.21.6-1

1:9.21.7-1

1:9.21.9-1

1:9.21.10-1

1:9.21.10-2

1:9.21.10-4

1:9.21.10-5

1:9.21.10-6

1:9.21.10-7

1:9.21.10-8

1:9.21.10-9

1:9.21.10-10

1:9.21.14-1

1:9.21.18-1

1:9.21.21-1

1:9.21.22-1

1:9.21.23-1

1:9.21.25-1

1:9.21.26-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-81563.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

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

1:9.20.26-1

1:9.20.27-1

1:9.20.27-2

1:9.20.29-1

1:9.21.0-1

1:9.21.1-1

1:9.21.3-1

1:9.21.6-1

1:9.21.7-1

1:9.21.9-1

1:9.21.10-1

1:9.21.10-2

1:9.21.10-4

1:9.21.10-5

1:9.21.10-6

1:9.21.10-7

1:9.21.10-8

1:9.21.10-9

1:9.21.10-10

1:9.21.14-1

1:9.21.18-1

1:9.21.21-1

1:9.21.22-1

1:9.21.23-1

1:9.21.25-1

1:9.21.26-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-81563.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

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

1:9.20.26-1

1:9.20.27-1

1:9.20.27-2

1:9.20.29-1

1:9.21.0-1

1:9.21.1-1

1:9.21.3-1

1:9.21.6-1

1:9.21.7-1

1:9.21.9-1

1:9.21.10-1

1:9.21.10-2

1:9.21.10-4

1:9.21.10-5

1:9.21.10-6

1:9.21.10-7

1:9.21.10-8

1:9.21.10-9

1:9.21.10-10

1:9.21.14-1

1:9.21.18-1

1:9.21.21-1

1:9.21.22-1

1:9.21.23-1

1:9.21.25-1

1:9.21.26-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-81563.json"