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24. By Martin Pitt on 2016-10-27

* New upstream bug fix release (LP: #1637236)
  - Fix WAL-logging of truncation of relation free space maps and visibility
    maps.
    It was possible for these files to not be correctly restored during
    crash recovery, or to be written incorrectly on a standby server. Bogus
    entries in a free space map could lead to attempts to access pages that
    have been truncated away from the relation itself, typically producing
    errors like "could not read block XXX: read only 0 of 8192 bytes".
    Checksum failures in the visibility map are also possible, if
    checksumming is enabled.

    Procedures for determining whether there is a problem and repairing it
    if so are discussed at
       https://wiki.postgresql.org/wiki/Free_Space_Map_Problems

  - Details about other changes:
    http://www.postgresql.org/docs/9.3/static/release-9-3-15.html

23. By Martin Pitt on 2016-05-12

* New upstream bug fix release. (LP: #1581016)
  - See http://www.postgresql.org/docs/9.3/static/release-9-3-13.html for
    details.

22. By Martin Pitt on 2016-03-31

* New upstream bug fix release. (LP: #1564268)
  - See http://www.postgresql.org/about/news/1656/ for details.

21. By Martin Pitt on 2015-06-12

* New upstream bug fix release (LP: #1464669)
  - Fix possible failure to recover from an inconsistent database state
  - Fix rare failure to invalidate relation cache init file
  - See http://www.postgresql.org/about/news/1592/ for details.

20. By Martin Pitt on 2015-06-03

* New upstream bug fix release (LP: #1461425)
  - Avoid failures while fsync'ing data directory during crash restart.

    In the previous minor releases we added a patch to fsync everything in
    the data directory after a crash. Unfortunately its response to any
    error condition was to fail, thereby preventing the server from starting
    up, even when the problem was quite harmless. An example is that an
    unwritable file in the data directory would prevent restart on some
    platforms; but it is common to make SSL certificate files unwritable by
    the server. Revise this behavior so that permissions failures are
    ignored altogether, and other types of failures are logged but do not
    prevent continuing.

 - See release notes for details about other fixes.

19. By Martin Pitt on 2014-07-24

* New upstream bug fix release: (LP: #1348176)
  - pg_upgrade: Users who upgraded to version 9.3 using pg_upgrade may have
    an issue with transaction information which causes VACUUM to eventually
    fail. These users should run the script provided in the release notes to
    determine if their installation is affected, and then take the remedy
    steps outlined there.
  - Various data integrity and other bug fixes.
  - Secure Unix-domain sockets of temporary postmasters started during make
    check.
    Any local user able to access the socket file could connect as the
    server's bootstrap superuser, then proceed to execute arbitrary code as
    the operating-system user running the test, as we previously noted in
    CVE-2014-0067. This change defends against that risk by placing the
    server's socket in a temporary, mode 0700 subdirectory of /tmp.
  - See release notes for details:
    http://www.postgresql.org/about/news/1534/
* Remove pg_regress patches to support --host=/path, obsolete with above
  upstream changes and not applicable any more.
* Drop tcl8.6 patch, applied upstream.
* Add missing logrotate test dependency.

18. By Christoph Berg on 2014-03-18

* New upstream bugfix release. Most notable change:

  Fix WAL replay of locking an already-updated tuple (Andres Freund,
  Álvaro Herrera)

  This error caused updated rows to not be found by index scans, resulting
  in inconsistent query results depending on whether an index scan was used.
  Subsequent processing could result in constraint violations, since the
  previously updated row would not be found by later index searches, thus
  possibly allowing conflicting rows to be inserted. Since this error is in
  WAL replay, it would only manifest during crash recovery or on standby
  servers. The improperly-replayed case most commonly arises when a table
  row that is referenced by a foreign-key constraint is updated concurrently
  with creation of a referencing row.

* Compile with -fno-omit-frame-pointer on amd64 to facilitate hierarchical
  profile generation. (Closes: #730134)
* Remove obsolete configure option --with-tkconfig.

17. By Martin Pitt on 2014-02-21

Upload current Debian packaging bzr to fix autopkgtest in LXC.

Add missing build-essential test depends, for 180_ecpg.t.

16. By Martin Pitt on 2014-02-20

Add missing gcc test depends, for 180_ecpg.t.

15. By Christoph Berg <email address hidden> on 2014-02-19

[ Christoph Berg ]
* New upstream security/bugfix release.

  + Shore up GRANT ... WITH ADMIN OPTION restrictions (Noah Misch)

    Granting a role without ADMIN OPTION is supposed to prevent the grantee
    from adding or removing members from the granted role, but this
    restriction was easily bypassed by doing SET ROLE first. The security
    impact is mostly that a role member can revoke the access of others,
    contrary to the wishes of his grantor. Unapproved role member additions
    are a lesser concern, since an uncooperative role member could provide
    most of his rights to others anyway by creating views or SECURITY
    DEFINER functions. (CVE-2014-0060)

  + Prevent privilege escalation via manual calls to PL validator functions
    (Andres Freund)

    The primary role of PL validator functions is to be called implicitly
    during CREATE FUNCTION, but they are also normal SQL functions that a
    user can call explicitly. Calling a validator on a function actually
    written in some other language was not checked for and could be
    exploited for privilege-escalation purposes. The fix involves adding a
    call to a privilege-checking function in each validator function.
    Non-core procedural languages will also need to make this change to
    their own validator functions, if any. (CVE-2014-0061)

  + Avoid multiple name lookups during table and index DDL (Robert Haas,
    Andres Freund)

    If the name lookups come to different conclusions due to concurrent
    activity, we might perform some parts of the DDL on a different table
    than other parts. At least in the case of CREATE INDEX, this can be used
    to cause the permissions checks to be performed against a different
    table than the index creation, allowing for a privilege escalation
    attack. (CVE-2014-0062)

  + Prevent buffer overrun with long datetime strings (Noah Misch)

    The MAXDATELEN constant was too small for the longest possible value of
    type interval, allowing a buffer overrun in interval_out(). Although the
    datetime input functions were more careful about avoiding buffer
    overrun, the limit was short enough to cause them to reject some valid
    inputs, such as input containing a very long timezone name. The ecpg
    library contained these vulnerabilities along with some of its own.
    (CVE-2014-0063)

  + Prevent buffer overrun due to integer overflow in size calculations
    (Noah Misch, Heikki Linnakangas)

    Several functions, mostly type input functions, calculated an allocation
    size without checking for overflow. If overflow did occur, a too-small
    buffer would be allocated and then written past. (CVE-2014-0064)

  + Prevent overruns of fixed-size buffers (Peter Eisentraut, Jozef Mlich)

    Use strlcpy() and related functions to provide a clear guarantee that
    fixed-size buffers are not overrun. Unlike the preceding items, it is
    unclear whether these cases really represent live issues, since in most
    cases there appear to be previous constraints on the size of the input
    string. Nonetheless it seems prudent to silence all Coverity warnings of
    this type. (CVE-2014-0065)

  + Avoid crashing if crypt() returns NULL (Honza Horak, Bruce Momjian)

    There are relatively few scenarios in which crypt() could return NULL,
    but contrib/chkpass would crash if it did. One practical case in which
    this could be an issue is if libc is configured to refuse to execute
    unapproved hashing algorithms (e.g., "FIPS mode"). (CVE-2014-0066)

  + Document risks of make check in the regression testing instructions
    (Noah Misch, Tom Lane)

    Since the temporary server started by make check uses "trust"
    authentication, another user on the same machine could connect to it as
    database superuser, and then potentially exploit the privileges of the
    operating-system user who started the tests. A future release will
    probably incorporate changes in the testing procedure to prevent this
    risk, but some public discussion is needed first. So for the moment,
    just warn people against using make check when there are untrusted users
    on the same machine. (CVE-2014-0067)

  + Rework tuple freezing protocol (Álvaro Herrera, Andres Freund)

    The logic for tuple freezing was unable to handle some cases involving
    freezing of multixact IDs, with the practical effect that shared
    row-level locks might be forgotten once old enough.

    Fixing this required changing the WAL record format for tuple freezing.
    While this is no issue for standalone servers, when using replication it
    means that standby servers must be upgraded to 9.3.3 or later before
    their masters are. An older standby will be unable to interpret freeze
    records generated by a newer master, and will fail with a PANIC message.
    (In such a case, upgrading the standby should be sufficient to let it
    resume execution.)

* The upstream tarballs no longer contain a plain HISTORY file, but point to
  the html documentation. Note the location of these files in our
  changelog.gz file.
* Teach configure to find tclsh8.6 where tclsh is not available.

[ Martin Pitt ]
* Build with LINUX_OOM_SCORE_ADJ=0 instead of the older LINUX_OOM_ADJ=0. All
  relevant distro releases (>= squeeze/lucid) use kernels which support
  /proc/pid/oom_score_adj, so avoid the dmesg warnings. (Closes: #646245,
  LP: #991725)
* Bump Standards-Version to 3.9.5 (no changes necessary).
* Build with tcl8.6 where available (>= Jessie, >= trusty).