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.. 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 9.16.42
----------------------
Security Fixes
~~~~~~~~~~~~~~
- The overmem cleaning process has been improved, to prevent the cache
from significantly exceeding the configured ``max-cache-size`` limit.
(CVE-2023-2828)
ISC would like to thank Shoham Danino from Reichman University, Anat
Bremler-Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv
University, and Yuval Shavitt from Tel-Aviv University for bringing
this vulnerability to our attention. :gl:`#4055`
- A query that prioritizes stale data over lookup triggers a fetch to
refresh the stale data in cache. If the fetch is aborted for exceeding
the recursion quota, it was possible for :iscman:`named` to enter an
infinite callback loop and crash due to stack overflow. This has been
fixed. (CVE-2023-2911) :gl:`#4089`
Bug Fixes
~~~~~~~~~
- Previously, it was possible for a delegation from cache to be returned
to the client after the ``stale-answer-client-timeout`` duration.
This has been fixed. :gl:`#3950`
Known Issues
~~~~~~~~~~~~
- There are no new known issues with this release. See :ref:`above
<relnotes_known_issues>` for a list of all known issues affecting this
BIND 9 branch.
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