RHSA-2026:94278 — Security Advisory

An update for bind9.18 is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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):

• 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)

• bind: bind: Denial of Service via long query names in RPZ processing (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)

• bind: BIND 9: Remote Denial of Service via cached SVCB/HTTPS AliasMode records (CVE-2026-81736)

• bind9: bind: BIND 9: Denial of Service via 16-bit length truncation in DNS negative cache handling (CVE-2026-19667)

• bind: BIND resolver: Denial of Service due to resource exhaustion in SVCB/HTTPS AliasMode processing (CVE-2026-81563)

• bind: BIND: Denial of Service via crafted DNSSEC reply (CVE-2026-80274)

• bind: BIND: Denial of Service via malformed DNS64 responses (CVE-2026-19666)

• bind: BIND: Denial of Service via unbounded processing of crafted DNS messages (CVE-2026-19630)

• bind: bind: Arbitrary code execution via GSS-TSIG UDP message replay (CVE-2026-94300)

• bind: bind: Denial of Service via assertion failure during redirect processing (CVE-2026-96888)

• bind: bind: Denial of service via assertion failure in RPZ query processing (CVE-2026-97313)

Bug Fix(es) and Enhancement(s):

• bind9.18: New root trust anchor key for DNSSEC [rhel-9.6.z] (JIRA:RHEL-255222)

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.