RLSA-2026:93925: Important: bind security, bug fix, and enhancement update
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):
bind9: bind: BIND 9: Denial of Service via crafted DNSSEC responses (CVE-2026-19662)
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)
Bug Fix(es) and Enhancement(s):
random named crashes on different Rocky Linux 8.10 resolvers after of installing bind-9.11.36-16.el810.14 (RHSA-2026:54654) (JIRA:Rocky Linux-257162)
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/bindto a version that resolves this vulnerability.Fixed in 2:9.11.36-18.el8_10 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch RHSA-2026:54654
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
Which BIND components may be relevant to this update?
The advisory identifies BIND's DNS server (named), resolver library, and DNS verification tools as components of the software package. It specifically notes random named crashes on certain Rocky Linux 8.10 resolvers with bind-9.11.36-16.el8_10.14.
What access does an attacker need to exploit the listed security issues?
The supplied CVSS vector indicates network attack access, no privileges, and no user interaction. Exploitation complexity is rated high.
What could successful exploitation cause?
The listed issues include denial of service through crafted DNSSEC responses or crafted DNS messages, and arbitrary code execution through GSS-TSIG UDP message replay. The supplied vector rates confidentiality, integrity, and availability impact as high.