Fedora 42 BIND Important Security Fix NSEC3 Issue FEDORA-2026-7f3f640fbf
fedora
April 9, 2026
Update to 9.18.47 (rhbz#2440561) Security Fixes: Fix unbounded NSEC3 iterations when validating referrals to unsigned delegations
Summary
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.
Update Information:
Update to 9.18.47 (rhbz#2440561) Security Fixes: Fix unbounded NSEC3 iterations when validating referrals to unsigned delegations. (CVE-2026-1519) Source: https://downloads.isc.org/isc/bind9/9.18.47/doc/arm/html/notes.html#notes-for- bind-9-18-47
Topics Covered
Change Log
* Wed Mar 25 2026 Petr Men\u0161k
References
[ 1 ] Bug #2440561 - bind-9.18.47 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2440561
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-7f3f640fbf' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
PREVIOUS
NEXT
Severity
important
Lowest
Low
Medium
High
Critical
Name: bind
Product: Fedora 42
Version: 9.18.47
Release: 1.fc42
Summary: The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) server
Topics Covered
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Related News
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!