RLSA-2026:98525: Important: bind9.18 security update
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: 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)
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
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
rocky-linux/bind9.18to a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-chrootto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-debuginfoto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-debugsourceto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-develto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-dnssec-utilsto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-dnssec-utils-debuginfoto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-libsto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-libs-debuginfoto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-utilsto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-utils-debuginfoto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1 - Upgrade
Upgrade
rocky-linux/bind9.18-docto a version that resolves this vulnerability.Fixed in 2:9.18.29-29.el9_9.1
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
Which Rocky Linux packages are covered by this update?
The update covers bind9.18, bind9.18-chroot, bind9.18-debuginfo, bind9.18-debugsource, bind9.18-devel, bind9.18-dnssec-utils, bind9.18-dnssec-utils-debuginfo, and bind9.18-libs.
What types of impact do the listed fixes address?
The update addresses denial-of-service conditions involving crafted DNS messages, redirect processing, and RPZ query processing. It also addresses arbitrary code execution through GSS-TSIG UDP message replay.
What attack conditions are identified for the highest-impact issue?
The arbitrary-code-execution issue is associated with replay of GSS-TSIG messages over UDP. The advisory does not state which BIND configurations enable GSS-TSIG or whether it is enabled by default.