From: Ondřej Surý <ondrej@isc.org>
Date: Thu, 28 May 2026 07:52:19 +0000 (+0200)
Subject: [9.20] fix: usr: Reject RRSIG records covering meta-types
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=7517e39504f38bde09217b707305b366e76cf793;p=thirdparty%2Fbind9.git

[9.20] fix: usr: Reject RRSIG records covering meta-types

A recursive resolver could accept and cache an RRSIG record whose
Type-Covered field names a meta-type (ANY, AXFR, IXFR, MAILA, MAILB),
even though no real RRset of those types ever exists. Such records
are now rejected by the DNS message parser.

Closes #6002

Backport of MR !12048

Merge branch 'backport-6002-reject-rrsig-covering-meta-types-9.20' into 'bind-9.20'

See merge request isc-projects/bind9!12051
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7517e39504f38bde09217b707305b366e76cf793