Input validation error in ISC BIND - CVE-2026-10822

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Main Vulnerability Database Vulnerabilities #VU139213

Input validation error in ISC BIND - CVE-2026-10822

Published: July 23, 2026


Vulnerability identifier: #VU139213
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-10822
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in DNS record text rendering when processing a stored DNS record with a PRIVATEDNS algorithm identifier length longer than the actual identifier data. A remote attacker can supply a specially crafted DNS record to cause a denial of service.

User interaction is required for BIND to later render the stored record to text.


Affected software

ISC BIND
SUSE Linux Enterprise Server 15 SP6
Debian Linux
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Basesystem Module
Server Applications Module
openSUSE Leap
Ubuntu
Anolis OS
openEuler
Fedora
bind-utils
bind-devel
bind-dnssec-utils
bind-libs
bind-dnssec-doc
bind-license
bind-debugsource
bind-debuginfo
bind-chroot
bind
bind-doc
bind-utils-debuginfo
bind-dyndb-ldap
bind9 (Ubuntu package)
bind9 (Debian package)

How to mitigate CVE-2026-10822

Install security update from vendor's website.

ISC BIND - addressed in versions 9.20.26, 9.20.26-s1, 9.21.24
bind-utils - addressed in versions 9.18.21-11, 9.20.21-4
bind-devel - addressed in versions 9.18.21-11, 9.20.21-4
bind-dnssec-utils - addressed in versions 9.18.21-11, 9.20.21-4
bind-libs - addressed in versions 9.18.21-11, 9.20.21-4
bind-dnssec-doc - addressed in versions 9.18.21-11, 9.20.21-4
bind-license - addressed in versions 9.18.21-11, 9.20.21-4
bind-debugsource - addressed in versions 9.18.21-11, 9.20.21-4
bind-debuginfo - addressed in versions 9.18.21-11, 9.20.21-4
bind-chroot - addressed in versions 9.18.21-11, 9.20.21-4
bind - addressed in versions 9.18.21-11, 9.20.21-4
bind - addressed in versions 9.18.50-2.fc43, 9.18.50-2.fc44, 9.18.50-34.fc45, 9.18.51^git20261003.d0a87358-2.fc43, 9.18.51^git20261003.d0a87358-2.fc44, 9.18.51^git20261003.d0a87358-11.fc46
bind-doc - addressed in versions 9.18.50-150600.3.32.1, 9.20.26-150700.3.29.1
bind-utils-debuginfo - addressed in versions 9.18.50-150600.3.32.1, 9.20.26-150700.3.29.1
bind-debugsource - addressed in versions 9.18.50-150600.3.32.1, 9.20.26-150700.3.29.1
bind - addressed in versions 9.18.50-150600.3.32.1, 9.20.26-150700.3.29.1
bind-debuginfo - addressed in versions 9.18.50-150600.3.32.1, 9.20.26-150700.3.29.1
bind-utils - addressed in versions 9.18.50-150600.3.32.1, 9.20.26-150700.3.29.1
bind - update to 9.20.26-1
bind-chroot - update to 9.20.26-1
bind-devel - update to 9.20.26-1
bind-dnssec-utils - update to 9.20.26-1
bind-libs - update to 9.20.26-1
bind-utils - update to 9.20.26-1
bind-dnssec-doc - update to 9.20.26-1
bind-doc - update to 9.20.26-1
bind-license - update to 9.20.26-1
bind-dyndb-ldap - addressed in versions 11.11-15.fc43, 11.11-17.fc44, 11.11-18.fc46
bind9 (Ubuntu package) - addressed in versions 1:9.18.39-0ubuntu0.22.04.5, 1:9.18.39-0ubuntu0.24.04.6, 1:9.20.24-1ubuntu0.2
bind9 (Debian package) - update to 1:9.20.26-1~deb13u1

External References

Related Security Bulletins