RHSA-2026:55441: Important: bind security update

Published Aug 17, 2026
·
Updated

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.Security Fix(es): bind: BIND 9 server memory exhaustion during GSS-API TKEY negotiation (CVE-2026-3039) bind: BIND: Denial of Service via specially crafted DNS messages (CVE-2026-5946) bind9: bind: Potential wildcard CNAME RPZ policy bypass (CVE-2026-11331) bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field (CVE-2026-13321) bind: bind9: Potential memory usage beyond configured limits (CVE-2026-11622) bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards (CVE-2026-11721) bind: bind9: Unexpected exit with NSEC and NSEC3 both present (CVE-2026-13204) bind: bind9: Incorrect acceptance of NSEC3 records (CVE-2026-10723) 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

48 affected componentsFixes available
redhat/bind<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-chroot<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-debugsource<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-dnssec-doc<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-dnssec-utils<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-dnssec-utils-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-libs<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-libs-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-license<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-utils<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-utils-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/python3-bind<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-chroot<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-debugsource<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-dnssec-utils<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-dnssec-utils-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-libs<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-libs-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-utils<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-utils-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-chroot<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-debugsource<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-dnssec-utils<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-dnssec-utils-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-libs<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-libs-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-utils<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-utils-debuginfo<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-chroot<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-debuginfo<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-debugsource<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-dnssec-utils<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-dnssec-utils-debuginfo<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-libs<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-libs-debuginfo<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-utils<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-utils-debuginfo<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa
redhat/bind-devel<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-devel<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-doc<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-devel<9.16.23-31.el9_6.4
9.16.23-31.el9_6.4
redhat/bind-devel<9.16.23-31.el9_6.4.aa
9.16.23-31.el9_6.4.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/bind to a version that resolves this vulnerability.

    Fixed in 9.16.23-31.el9_6.4
  2. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  3. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  4. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  5. Upgrade

    Upgrade redhat/bind-dnssec-doc to a version that resolves this vulnerability.

    Fixed in 9.16.23-31.el9_6.4
  6. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  7. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  8. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  9. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  10. Upgrade

    Upgrade redhat/bind-license to a version that resolves this vulnerability.

    Fixed in 9.16.23-31.el9_6.4
  11. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  12. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  13. Upgrade

    Upgrade redhat/python3-bind to a version that resolves this vulnerability.

    Fixed in 9.16.23-31.el9_6.4
  14. Upgrade

    Upgrade redhat/bind to a version that resolves this vulnerability.

    Fixed in 9.16.23-31.el9_6.4.aa
  15. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  16. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  17. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  18. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  19. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  20. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  21. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  22. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  23. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  24. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  25. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4
  26. Upgrade

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

    Fixed in 9.16.23-31.el9_6.4.aa
  27. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-3039
  28. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-11331
  29. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-5946
  30. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-11721
  31. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-13321
  32. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-10723
  33. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-11622
  34. Upgrade

    Upgrade bind9 (BIND/named) to a version that resolves this vulnerability.

    Patch CVE-2026-13204
  35. Compensating control

    If you cannot immediately apply the BIND security update, reduce exposure by limiting network access to the BIND (named) service (e.g., restrict inbound DNS traffic and admin/control-plane access to trusted sources only).

Event History

Aug 17, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
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