RHSA-2026:95242: Important: bind security, bug fix, and enhancement update
Important: bind security, bug fix, and enhancement update
Other sources
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) 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) bind9: bind: BIND 9: Denial of Service via 16-bit length truncation in DNS negative cache handling (CVE-2026-19667) 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): bind: Avoid costly reload of IdM named due to logrotate operation (JIRA:RHEL-245352) bind: New root trust anchor key for DNSSEC (JIRA:RHEL-255760) bind 9.16 crash with SIGSEGV (JIRA:RHEL-280606) 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.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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redhat/bindto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-chrootto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-debugsourceto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-dnssec-docto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-dnssec-utilsto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-dnssec-utils-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-libsto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-libs-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-licenseto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-utilsto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bind-utils-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/python3-bindto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12 - Upgrade
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redhat/bindto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-chrootto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-debugsourceto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-dnssec-utilsto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-dnssec-utils-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-libsto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-libs-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-utilsto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa - Upgrade
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redhat/bind-utils-debuginfoto a version that resolves this vulnerability.Fixed in 9.16.23-11.el9_2.12.aa
Event History
Frequently Asked Questions
Which BIND components are covered by this update?
The advisory covers bind, bind-chroot, bind-debuginfo, bind-debugsource, bind-dnssec-utils, bind-dnssec-utils-debuginfo, bind-libs, and bind-libs-debuginfo packages from Red Hat.
What security impacts are addressed?
The listed fixes include denial-of-service and memory-exhaustion conditions, DNSSEC validation bypasses or incorrect DNSSEC record acceptance, cache poisoning, and unexpected server exits. Several issues involve crafted DNS messages, DNSSEC replies, negative-cache handling, RPZ processing, or GSS-API TKEY negotiation.