postgresql-15 (15.5-0ubuntu0.23.04.1) lunar-security; urgency=medium

  * New upstream version (LP: #2040469).

    + A dump/restore is not required for those running 15.X.

    + However, several mistakes have been discovered that could lead to
      certain types of indexes yielding wrong search results or being
      unnecessarily inefficient. It is advisable to REINDEX
      potentially-affected indexes after installing this update.

    + Also, if you are upgrading from a version earlier than 15.4, see
      those release notes as well please.

    + Fix handling of unknown-type arguments in DISTINCT "any" aggregate
      functions (Tom Lane)

      This error led to a text-type value being interpreted as an unknown-type
      value (that is, a zero-terminated string) at runtime. This could result
      in disclosure of server memory following the text value.
      (CVE-2023-5868)

    + Detect integer overflow while computing new array dimensions (Tom Lane)

      When assigning new elements to array subscripts that are outside the
      current array bounds, an undetected integer overflow could occur in edge
      cases. Memory stomps that are potentially exploitable for arbitrary code
      execution are possible, and so is disclosure of server memory.
      (CVE-2023-5869)

    + Prevent the pg_signal_backend role from signalling background workers
      and autovacuum processes (Noah Misch, Jelte Fennema-Nio)

      The documentation says that pg_signal_backend cannot issue signals to
      superuser-owned processes. It was able to signal these background
      processes, though, because they advertise a role OID of zero. Treat that
      as indicating superuser ownership. The security implications of
      cancelling one of these process types are fairly small so far as the
      core code goes (we'll just start another one), but extensions might add
      background workers that are more vulnerable.

      Also ensure that the is_superuser parameter is set correctly in such
      processes. No specific security consequences are known for that
      oversight, but it might be significant for some extensions.
      (CVE-2023-5870)

    + Fix misbehavior during recursive page split in GiST index build
      (Heikki Linnakangas)

      Fix a case where the location of a page downlink was incorrectly
      tracked, and introduce some logic to allow recovering from such
      situations rather than silently doing the wrong thing. This error could
      result in incorrect answers from subsequent index searches. It may be
      advisable to reindex all GiST indexes after installing this update.

    + Prevent de-duplication of btree index entries for interval columns
      (Noah Misch)

      There are interval values that are distinguishable but compare equal,
      for example 24:00:00 and 1 day. This breaks assumptions made by btree
      de-duplication, so interval columns need to be excluded from
      de-duplication. This oversight can cause incorrect results from
      index-only scans. Moreover, after updating amcheck will report an error
      for almost all such indexes. Users should reindex any btree indexes on
      interval columns.

    + Process date values more sanely in BRIN datetime_minmax_multi_ops
      indexes (Tomas Vondra)

      The distance calculation for dates was backward, causing poor decisions
      about which entries to merge. The index still produces correct results,
      but is much less efficient than it should be. Reindexing BRIN
      minmax_multi indexes on date columns is advisable.

    + Process large timestamp and timestamptz values more sanely in BRIN
      datetime_minmax_multi_ops indexes (Tomas Vondra)

      Infinities were mistakenly treated as having distance zero rather than a
      large distance from other values, causing poor decisions about which
      entries to merge. Also, finite-but-very-large values (near the endpoints
      of the representable timestamp range) could result in internal
      overflows, again causing poor decisions. The index still produces
      correct results, but is much less efficient than it should be.
      Reindexing BRIN minmax_multi indexes on timestamp and timestamptz
      columns is advisable if the column contains, or has contained,
      infinities or large finite values.

    + Details about these and many further changes can be found at:
      https://www.postgresql.org/docs/15/release-15-5.html.

  * d/p/libpgport-pkglibdir: adjust patch for new release.

 -- Athos Ribeiro <athos.ribeiro@canonical.com>  Thu, 23 Nov 2023 11:27:03 -0300

postgresql-15 (15.4-0ubuntu0.23.04.1) lunar-security; urgency=medium

  * New upstream version (LP: #2028426).

    + A dump/restore is not required for those running 15.X.

    + However, if you use BRIN indexes, it may be advisable to reindex them.

    + Also, if you are upgrading from a version earlier than 15.1, see
      those release notes as well please.

    + Disallow substituting a schema or owner name into an extension script
      if the name contains a quote, backslash, or dollar sign (Noah Misch)

      This restriction guards against SQL-injection hazards for trusted
      extensions.
      (CVE-2023-39417)

    + Fix MERGE to enforce row security policies properly (Dean Rasheed)
      (CVE-2023-39418)

    + Fix confusion between empty (no rows) ranges and all-NULL ranges in
      BRIN indexes, as well as incorrect merging of all-NULL summaries
      (Tomas Vondra)

      Each of these oversights could result in forgetting that a BRIN
      index range contains any NULL values, potentially allowing
      subsequent queries that should return NULL values to miss doing so.

      This fix will not in itself correct faulty BRIN entries.
      It's recommended to REINDEX any BRIN indexes that
      may be used to search for nulls.

    + Details about these and many further changes can be found at:
      https://www.postgresql.org/docs/15/release-15-4.html.

 -- Athos Ribeiro <athos.ribeiro@canonical.com>  Wed, 09 Aug 2023 09:00:47 -0300

postgresql-15 (15.3-0ubuntu0.23.04.1) lunar-security; urgency=medium

  * New upstream version (LP: #2019214).

    + A dump/restore is not required for those running 15.X.

    + Also, if you are upgrading from a version earlier than 15.1, see
      those release notes as well please.

    + Prevent CREATE SCHEMA from defeating changes in search_path
      (Alexander Lakhin)

      Within a CREATE SCHEMA command, objects in the prevailing
      search_path, as well as those in the newly-created schema, would be
      visible even within a called function or script that attempted to set
      a secure search_path. This could allow any user having permission to
      create a schema to hijack the privileges of a security definer
      function or extension script.
      (CVE-2023-2454)

    + Enforce row-level security policies correctly after inlining a
      set-returning function (Stephen Frost, Tom Lane)

      If a set-returning SQL-language function refers to a table having
      row-level security policies, and it can be inlined into a calling
      query, those RLS policies would not get enforced properly in some
      cases involving re-using a cached plan under a different role. This
      could allow a user to see or modify rows that should have been
      invisible.
      (CVE-2023-2455)

    + Details about these and many further changes can be found at:
      https://www.postgresql.org/docs/15/release-15-3.html.

 -- Sergio Durigan Junior <sergio.durigan@canonical.com>  Thu, 11 May 2023 16:24:27 -0400

postgresql-15 (15.2-1) unstable; urgency=medium

  * New upstream version.

    + libpq can leak memory contents after GSSAPI transport encryption
      initiation fails (Jacob Champion)

      A modified server, or an unauthenticated man-in-the-middle, can send a
      not-zero-terminated error message during setup of GSSAPI (Kerberos)
      transport encryption.  libpq will then copy that string, as well as
      following bytes in application memory up to the next zero byte, to its
      error report. Depending on what the calling application does with the
      error report, this could result in disclosure of application memory
      contents.  There is also a small probability of a crash due to reading
      beyond the end of memory.  Fix by properly zero-terminating the server
      message. (CVE-2022-41862)

 -- Christoph Berg <myon@debian.org>  Tue, 07 Feb 2023 14:57:10 +0100

postgresql-15 (15.1-1) unstable; urgency=medium

  * New upstream version.

 -- Christoph Berg <myon@debian.org>  Tue, 08 Nov 2022 10:59:12 +0100

postgresql-15 (15.0-2) unstable; urgency=medium

  * Add Breaks on dbconfig-common (<< 2.0.22~) which doesn't support the
    stricter permissions on the default public schema yet.
  * Cherry-pick 4a6de748d3 from upstream to help fix #1021859.
  * Mark -doc package as <!nodoc>.

 -- Christoph Berg <myon@debian.org>  Mon, 24 Oct 2022 11:30:00 +0200

postgresql-15 (15.0-1) unstable; urgency=medium

  * New upstream version.

 -- Christoph Berg <myon@debian.org>  Fri, 14 Oct 2022 10:36:49 +0200

postgresql-15 (15~rc2-1) unstable; urgency=medium

  [ Christoph Berg ]
  * New upstream RC version.

  [ Petter Jacobsen ]
  * Add . to extension_destdir description.

 -- Christoph Berg <myon@debian.org>  Thu, 06 Oct 2022 14:06:05 +0200

postgresql-15 (15~rc1-1) experimental; urgency=medium

  * New upstream RC version.

 -- Christoph Berg <myon@debian.org>  Tue, 27 Sep 2022 11:31:54 +0200

postgresql-15 (15~beta4-1) experimental; urgency=medium

  * New upstream beta version.
  * Add Italian debconf translation by Ceppo, thanks! (Closes: #1019162)

 -- Christoph Berg <myon@debian.org>  Tue, 06 Sep 2022 11:44:55 +0200

postgresql-15 (15~beta3-1) experimental; urgency=medium

  * New upstream beta version.
  * debian/copyright: Update src/backend/regex section.
  * Update lintian overrides.

 -- Christoph Berg <myon@debian.org>  Wed, 10 Aug 2022 14:33:48 +0200

postgresql-15 (15~beta2-1) experimental; urgency=medium

  * New upstream beta version.
  * Depend on postgresql-common >= 241.
  * Disable LLVM JIT on s390x for now. (See #1002029)

 -- Christoph Berg <myon@debian.org>  Tue, 28 Jun 2022 18:20:44 +0200

postgresql-15 (15~beta1-1) experimental; urgency=medium

  * New major upstream version 15; packaging based on postgresql-14.
  * configure.ac: Remove check for autoconf 2.69.

 -- Christoph Berg <myon@debian.org>  Wed, 18 May 2022 16:26:02 +0200
