From: Colin Vidal <colin@isc.org>
Date: Fri, 12 Jun 2026 14:50:23 +0000 (+0200)
Subject: fix: dev: Fix delegdb dump buffer overflow
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=684f57745857e40d1d434acfc6fb6d8ad3ddaa4a;p=thirdparty%2Fbind9.git

fix: dev: Fix delegdb dump buffer overflow

A buffer used to dump a DNS name in the delegdb dump flow was using the
wrong size: it was using `DNS_NAME_MAXWIRE` which is the actual max
length of a DNS name on the wire instead of using `DNS_NAME_FORMATSIZE`
which is the maximum length of a textual representation of a DNS name
(which can be way longer than `DNS_NAME_MAXWIRE` if using the master
file escape sequence format) plus 1 (end of string byte). This could
lead to a buffer overflow. This is now fixed.

Closes #6132

Merge branch '6132-delegdb-dump-overflow' into 'main'

See merge request isc-projects/bind9!12195
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684f57745857e40d1d434acfc6fb6d8ad3ddaa4a