From release notes (https://downloads.isc.org/isc/bind9/9.16.27/doc/arm/html/notes.html#notes-for-bind-9-16-27): """ Notes for BIND 9.16.27 Security Fixes The rules for acceptance of records into the cache have been tightened to prevent the possibility of poisoning if forwarders send records outside the configured bailiwick. (CVE-2021-25220) ISC would like to thank Xiang Li, Baojun Liu, and Chaoyi Lu from Network and Information Security Lab, Tsinghua University, and Changgen Zou from Qi An Xin Group Corp. for bringing this vulnerability to our attention. [GL #2950] TCP connections with keep-response-order enabled could leave the TCP sockets in the CLOSE_WAIT state when the client did not properly shut down the connection. (CVE-2022-0396) [GL #3112] """
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7b918ba18b54e673b3b58f6dab03cb3c81f8148b commit 7b918ba18b54e673b3b58f6dab03cb3c81f8148b Author: Sam James <sam@gentoo.org> AuthorDate: 2022-03-16 18:14:15 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2022-03-16 18:14:24 +0000 net-dns/bind-tools: add 9.16.27 Bug: https://bugs.gentoo.org/835439 Signed-off-by: Sam James <sam@gentoo.org> net-dns/bind-tools/Manifest | 1 + net-dns/bind-tools/bind-tools-9.16.27.ebuild | 148 +++++++++++++++++++++++++++ 2 files changed, 149 insertions(+) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b0eedb1c3f97c98966757a0e4909a15afb24e907 commit b0eedb1c3f97c98966757a0e4909a15afb24e907 Author: Sam James <sam@gentoo.org> AuthorDate: 2022-03-16 18:10:41 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2022-03-16 18:14:22 +0000 net-dns/bind: add 9.16.27 Bug: https://bugs.gentoo.org/835439 Signed-off-by: Sam James <sam@gentoo.org> net-dns/bind/Manifest | 1 + net-dns/bind/bind-9.16.27.ebuild | 375 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 376 insertions(+)
Please cleanup
