RHSA-2026:98488: Moderate: bind9.18 security update

Published Nov 11, 2026
·
Updated

BIND (Berkeley Internet Name Domain) is an implementation of the DNS (Domain Name System) protocols. BIND includes a DNS server (named), which resolves host names to IP addresses; a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating properly.Security Fix(es): bind9: bind: BIND 9: Denial of Service via crafted DNSSEC responses (CVE-2026-19662) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

45 affected componentsFixes available
redhat/bind9.18<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-chroot<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-debugsource<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-dnssec-utils<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-dnssec-utils-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-libs<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-libs-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-utils<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-utils-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-chroot<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-debugsource<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-dnssec-utils<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-dnssec-utils-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-libs<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-libs-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-utils<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-utils-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-chroot<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-debugsource<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-dnssec-utils<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-dnssec-utils-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-libs<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-libs-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-utils<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-utils-debuginfo<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-chroot<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-debuginfo<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-debugsource<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-dnssec-utils<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-dnssec-utils-debuginfo<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-libs<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-libs-debuginfo<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-utils<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-utils-debuginfo<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa
redhat/bind9.18-devel<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-devel<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-doc<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-devel<9.18.29-29.el9_9
9.18.29-29.el9_9
redhat/bind9.18-devel<9.18.29-29.el9_9.aa
9.18.29-29.el9_9.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/bind9.18 to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  2. Upgrade

    Upgrade redhat/bind9.18-chroot to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  3. Upgrade

    Upgrade redhat/bind9.18-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  4. Upgrade

    Upgrade redhat/bind9.18-debugsource to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  5. Upgrade

    Upgrade redhat/bind9.18-dnssec-utils to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  6. Upgrade

    Upgrade redhat/bind9.18-dnssec-utils-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  7. Upgrade

    Upgrade redhat/bind9.18-libs to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  8. Upgrade

    Upgrade redhat/bind9.18-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  9. Upgrade

    Upgrade redhat/bind9.18-utils to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  10. Upgrade

    Upgrade redhat/bind9.18-utils-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  11. Upgrade

    Upgrade redhat/bind9.18 to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  12. Upgrade

    Upgrade redhat/bind9.18-chroot to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  13. Upgrade

    Upgrade redhat/bind9.18-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  14. Upgrade

    Upgrade redhat/bind9.18-debugsource to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  15. Upgrade

    Upgrade redhat/bind9.18-dnssec-utils to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  16. Upgrade

    Upgrade redhat/bind9.18-dnssec-utils-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  17. Upgrade

    Upgrade redhat/bind9.18-libs to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  18. Upgrade

    Upgrade redhat/bind9.18-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  19. Upgrade

    Upgrade redhat/bind9.18-utils to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  20. Upgrade

    Upgrade redhat/bind9.18-utils-debuginfo to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa
  21. Upgrade

    Upgrade redhat/bind9.18-devel to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  22. Upgrade

    Upgrade redhat/bind9.18-doc to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9
  23. Upgrade

    Upgrade redhat/bind9.18-devel to a version that resolves this vulnerability.

    Fixed in 9.18.29-29.el9_9.aa

Event History

Nov 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software

Frequently Asked Questions

1

Which deployments are most relevant to this issue?

Deployments using the Red Hat bind9.18 DNS server, including the bind9.18-chroot package, are relevant. The issue is described as a denial of service through crafted DNSSEC responses.

2

What must an attacker provide to trigger the denial of service?

The issue requires crafted DNSSEC responses. The advisory does not state any additional authentication, network-position, or configuration requirements.

3

Which related packages are covered by the update?

The listed packages include bind9.18, bind9.18-chroot, bind9.18-libs, bind9.18-dnssec-utils, and their debuginfo or debugsource packages.

Company

Resources

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