[ubuntu/jammy-security] bind9 1:9.18.39-0ubuntu0.22.04.6 (Accepted)

[Marc Deslauriers]

bind9 (1:9.18.39-0ubuntu0.22.04.6) jammy-security; urgency=medium

  * SECURITY UPDATE: Unexpected exit in certain situations with NSEC and NSEC3
    both present
    - debian/patches/CVE-2026-13204-1.patch: dns_rdataset_addnoqname() could
      find unsigned NSEC/NSEC3 in lib/dns/rbtdb.c, lib/dns/rdatalist.c,
      lib/dns/resolver.c, lib/ns/query.c.
    - debian/patches/CVE-2026-13204-2.patch: Reproducer for #5985 addnoqname
      mismatch in
      bin/tests/system/repro_5985_findnoqname_runtime_check/ans1/ans.py,
      bin/tests/system/repro_5985_findnoqname_runtime_check/ns2/named.conf.j2,
      bin/tests/system/repro_5985_findnoqname_runtime_check/server.py, bin/tests
      /system/repro_5985_findnoqname_runtime_check/tests_repro_5985_findnoqname_
      runtime_check.py.
    - debian/patches/CVE-2026-13204-3.patch: Update reproducer #5985 in
      bin/tests/system/dnssec_findnoqname_mismatch/ans1/ans.py,
      bin/tests/system/dnssec_findnoqname_mismatch/ns2/named.conf.j2, bin/tests/
      system/dnssec_findnoqname_mismatch/tests_findnoqname_mismatch.py.
    - CVE-2026-13204

Date: 2026-08-27 15:23:11.237793+00:00
Changed-By: Marc Deslauriers <marc.deslauriers at canonical.com>
https://launchpad.net/ubuntu/+source/bind9/1:9.18.39-0ubuntu0.22.04.6
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