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>E.143. Release 8.2.2</A
></H1
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><P
><B
>Release date: </B
>2007-02-05</P
></DIV
><P
> This release contains a variety of fixes from 8.2.1, including
a security fix.
For information about new features in the 8.2 major release, see
<A
HREF="release-8-2.html"
>Section E.145</A
>.
</P
><DIV
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CLASS="SECT2"
><A
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>E.143.1. Migration to Version 8.2.2</A
></H2
><P
> A dump/restore is not required for those running 8.2.X.
</P
></DIV
><DIV
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><H2
CLASS="SECT2"
><A
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>E.143.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
> Remove security vulnerabilities that allowed connected users
to read backend memory (Tom)
</P
><P
> The vulnerabilities involve suppressing the normal check that a SQL
function returns the data type it's declared to, and changing the
data type of a table column (CVE-2007-0555, CVE-2007-0556). These
errors can easily be exploited to cause a backend crash, and in
principle might be used to read database content that the user
should not be able to access.
</P
></LI
><LI
><P
> Fix not-so-rare-anymore bug wherein btree index page splits could fail
due to choosing an infeasible split point (Heikki Linnakangas)
</P
></LI
><LI
><P
> Fix Borland C compile scripts (L Bayuk)
</P
></LI
><LI
><P
> Properly handle <CODE
CLASS="FUNCTION"
>to_char('CC')</CODE
> for years ending in
<TT
CLASS="LITERAL"
>00</TT
> (Tom)
</P
><P
> Year 2000 is in the twentieth century, not the twenty-first.
</P
></LI
><LI
><P
> <TT
CLASS="FILENAME"
>/contrib/tsearch2</TT
> localization improvements (Tatsuo, Teodor)
</P
></LI
><LI
><P
> Fix incorrect permission check in
<TT
CLASS="LITERAL"
>information_schema.key_column_usage</TT
> view (Tom)
</P
><P
> The symptom is <SPAN
CLASS="QUOTE"
>"relation with OID nnnnn does not exist"</SPAN
> errors.
To get this fix without using <TT
CLASS="COMMAND"
>initdb</TT
>, use <TT
CLASS="COMMAND"
>CREATE OR
REPLACE VIEW</TT
> to install the corrected definition found in
<TT
CLASS="FILENAME"
>share/information_schema.sql</TT
>. Note you will need to do
this in each database.
</P
></LI
><LI
><P
> Improve <TT
CLASS="COMMAND"
>VACUUM</TT
> performance for databases with many tables (Tom)
</P
></LI
><LI
><P
> Fix for rare Assert() crash triggered by <TT
CLASS="LITERAL"
>UNION</TT
> (Tom)
</P
></LI
><LI
><P
> Fix potentially incorrect results from index searches using
<TT
CLASS="LITERAL"
>ROW</TT
> inequality conditions (Tom)
</P
></LI
><LI
><P
> Tighten security of multi-byte character processing for UTF8 sequences
over three bytes long (Tom)
</P
></LI
><LI
><P
> Fix bogus <SPAN
CLASS="QUOTE"
>"permission denied"</SPAN
> failures occurring on Windows
due to attempts to fsync already-deleted files (Magnus, Tom)
</P
></LI
><LI
><P
> Fix bug that could cause the statistics collector
to hang on Windows (Magnus)
</P
><P
> This would in turn lead to autovacuum not working.
</P
></LI
><LI
><P
> Fix possible crashes when an already-in-use PL/pgSQL function is
updated (Tom)
</P
></LI
><LI
><P
> Improve PL/pgSQL handling of domain types (Sergiy Vyshnevetskiy, Tom)
</P
></LI
><LI
><P
> Fix possible errors in processing PL/pgSQL exception blocks (Tom)
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