From: Evan Hunt <each@isc.org>
Date: Tue, 5 May 2026 23:19:59 +0000 (+0000)
Subject: fix: dev: Fix a stack use-after-free in qpzone
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82f67fc633b1f94f34fb0686cde5acaec05f2af7;p=thirdparty%2Fbind9.git

fix: dev: Fix a stack use-after-free in qpzone

In previous_closest_nsec(), a new qpreader was opened to search the NSEC
tree. It was possible for that to be used to update a QP iterator object
owned by the caller, and then be destroyed when the function returned.

This qpreader object isn't necessary anymore; since namespaces were
added to the QP trie in commit 15653c54a0, we can now just reuse the
existing reader for the main tree.

Closes #5942

Merge branch '5942-qpiter-fix' into 'main'

See merge request isc-projects/bind9!11955
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82f67fc633b1f94f34fb0686cde5acaec05f2af7