Package "bind9-dev"

  bind9 (1:9.20.11-1ubuntu2.2) questing-security; urgency=medium

  * SECURITY UPDATE: Excessive NSEC3 iterations cause high CPU load during
    insecure delegation validation
    - debian/patches/CVE-2026-1519-1.patch: add reproducers to bin/tests/*.
    - debian/patches/CVE-2026-1519-2.patch: check iterations in
      isdelegation() in lib/dns/validator.c.
    - debian/patches/CVE-2026-1519-3.patch: don't verify already trusted
      rdatasets in lib/dns/include/dns/types.h, lib/dns/validator.c.
    - debian/patches/CVE-2026-1519-4.patch: combine validator_log and
      marksecure in lib/dns/validator.c.
    - debian/patches/CVE-2026-1519-5.patch: check RRset trust in
      validate_neg_rrset() in lib/dns/validator.c.
    - CVE-2026-1519
  * SECURITY UPDATE: Memory leak in code preparing DNSSEC proofs of
    non-existence
    - debian/patches/CVE-2026-3104-1.patch: add tests to bin/tests/*.
    - debian/patches/CVE-2026-3104-2.patch: fix memory leak in QPcache
      addnoqname/addclosest mechanism in lib/dns/qpcache.c,
      lib/dns/rbtdb.c.
    - CVE-2026-3104
  * SECURITY UPDATE: Authenticated query containing a TKEY record may cause
    named to terminate unexpectedly
    - debian/patches/CVE-2026-3119-1.patch: add tests to bin/tests/*.
    - debian/patches/CVE-2026-3119-2.patch: fix a bug in
      dns_tkey_processquery() in lib/dns/tkey.c.
    - CVE-2026-3119
  * SECURITY UPDATE: A stack use-after-return flaw in SIG(0) handling code
    may enable ACL bypass
    - debian/patches/CVE-2026-3591-1.patch: add tests to bin/tests/*.
    - debian/patches/CVE-2026-3591-2.patch: fix stack Use-After-Return in
      SIG(0) handling in bin/named/server.c.
    - CVE-2026-3591

 -- Marc Deslauriers <email address hidden> Tue, 24 Mar 2026 11:17:07 -0400

  bind9 (1:9.20.11-1ubuntu2.1) questing-security; urgency=medium

  * SECURITY UPDATE: Resource exhaustion via malformed DNSKEY handling
    - debian/patches/CVE-2025-8677.patch: count invalid keys as validation
      failures in lib/dns/validator.c.
    - CVE-2025-8677
  * SECURITY UPDATE: Cache poisoning attacks with unsolicited RRs
    - debian/patches/CVE-2025-40778.patch: no longer accept DNAME records
      or extraneous NS records in the AUTHORITY section unless these are
      received via spoofing-resistant transport in doc/arm/reference.rst,
      lib/dns/include/dns/message.h, lib/dns/message.c, lib/dns/resolver.c.
    - CVE-2025-40778
  * SECURITY UPDATE: Cache poisoning due to weak PRNG
    - debian/patches/CVE-2025-40780.patch: change internal random generator
      to a cryptographically secure pseudo-random generator in
      configure.ac, lib/isc/Makefile.am, lib/isc/hash.c, lib/isc/hashmap.c,
      lib/isc/include/isc/nonce.h, lib/isc/include/isc/random.h,
      lib/isc/random.c, tests/isc/random_test.c.
    - CVE-2025-40780

 -- Marc Deslauriers <email address hidden> Tue, 21 Oct 2025 07:57:20 -0400