Prepare release notes for BIND 9.18.47

doc/arm/notes.rst

@@ -45,6 +45,7 @@ The list of known issues affecting the latest version in the 9.18 branch can be
 found at
 https://gitlab.isc.org/isc-projects/bind9/-/wikis/Known-Issues-in-BIND-9.18
 
+.. include:: ../notes/notes-9.18.47.rst
 .. include:: ../notes/notes-9.18.46.rst
 .. include:: ../notes/notes-9.18.45.rst
 .. include:: ../notes/notes-9.18.44.rst

doc/notes/notes-9.18.47.rst

@@ -0,0 +1,32 @@
+.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+..
+.. SPDX-License-Identifier: MPL-2.0
+..
+.. This Source Code Form is subject to the terms of the Mozilla Public
+.. License, v. 2.0.  If a copy of the MPL was not distributed with this
+.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
+..
+.. See the COPYRIGHT file distributed with this work for additional
+.. information regarding copyright ownership.
+
+Notes for BIND 9.18.47
+----------------------
+
+Security Fixes
+~~~~~~~~~~~~~~
+
+- [CVE-2026-1519] Fix unbounded NSEC3 iterations when validating
+  referrals to unsigned delegations.
+
+  DNSSEC-signed zones may contain high iteration-count NSEC3 records,
+  which prove that certain delegations are insecure. Previously, a
+  validating resolver encountering such a delegation processed these
+  iterations up to the number given, which could be a maximum of 65,535.
+  This has been addressed by introducing a processing limit, set at 150.
+  Now, if such an NSEC3 record is encountered, the delegation will be
+  treated as insecure.
+
+  ISC would like to thank Samy Medjahed/Ap4sh for bringing this
+  vulnerability to our attention. :gl:`#5708`
+
+