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>E.166. Release 8.1.3</A
></H1
><DIV
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><P
><B
>Release date: </B
>2006-02-14</P
></DIV
><P
>   This release contains a variety of fixes from 8.1.2,
   including one very serious security issue.
   For information about new features in the 8.1 major release, see
   <A
HREF="release-8-1.html"
>Section E.169</A
>.
  </P
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><A
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>E.166.1. Migration to Version 8.1.3</A
></H2
><P
>    A dump/restore is not required for those running 8.1.X.
    However, if you are upgrading from a version earlier than 8.1.2,
    see <A
HREF="release-8-1-2.html"
>Section E.167</A
>.
   </P
></DIV
><DIV
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><H2
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><A
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>E.166.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>Fix bug that allowed any logged-in user to <TT
CLASS="COMMAND"
>SET
ROLE</TT
> to any other database user id (CVE-2006-0553)</P
><P
>Due to inadequate validity checking, a user could exploit the special
case that <TT
CLASS="COMMAND"
>SET ROLE</TT
> normally uses to restore the previous role
setting after an error.  This allowed ordinary users to acquire superuser
status, for example.
The escalation-of-privilege risk exists only in 8.1.0-8.1.2.
However, in all releases back to 7.3 there is a related bug in <TT
CLASS="COMMAND"
>SET
SESSION AUTHORIZATION</TT
> that allows unprivileged users to crash the server,
if it has been compiled with Asserts enabled (which is not the default).
Thanks to Akio Ishida for reporting this problem.</P
></LI
><LI
><P
>Fix bug with row visibility logic in self-inserted
rows (Tom)</P
><P
>Under rare circumstances a row inserted by the current command
could be seen as already valid, when it should not be.  Repairs bug
created in 8.0.4, 7.4.9, and 7.3.11 releases.</P
></LI
><LI
><P
>Fix race condition that could lead to <SPAN
CLASS="QUOTE"
>"file already
exists"</SPAN
> errors during pg_clog and pg_subtrans file creation
(Tom)</P
></LI
><LI
><P
>Fix cases that could lead to crashes if a cache-invalidation
message arrives at just the wrong time (Tom)</P
></LI
><LI
><P
>Properly check <TT
CLASS="LITERAL"
>DOMAIN</TT
> constraints for
<TT
CLASS="LITERAL"
>UNKNOWN</TT
> parameters in prepared statements
(Neil)</P
></LI
><LI
><P
>Ensure <TT
CLASS="COMMAND"
>ALTER COLUMN TYPE</TT
> will process
<TT
CLASS="LITERAL"
>FOREIGN KEY</TT
>, <TT
CLASS="LITERAL"
>UNIQUE</TT
>, and <TT
CLASS="LITERAL"
>PRIMARY KEY</TT
>
constraints in the proper order (Nakano Yoshihisa)</P
></LI
><LI
><P
>Fixes to allow restoring dumps that have cross-schema
references to custom operators or operator classes (Tom)</P
></LI
><LI
><P
>Allow <SPAN
CLASS="APPLICATION"
>pg_restore</SPAN
> to continue properly after a
<TT
CLASS="COMMAND"
>COPY</TT
> failure; formerly it tried to treat the remaining
<TT
CLASS="COMMAND"
>COPY</TT
> data as SQL commands (Stephen Frost)</P
></LI
><LI
><P
>Fix <SPAN
CLASS="APPLICATION"
>pg_ctl</SPAN
> <TT
CLASS="LITERAL"
>unregister</TT
> crash
when the  data directory is not specified (Magnus)</P
></LI
><LI
><P
>Fix <SPAN
CLASS="APPLICATION"
>libpq</SPAN
> <CODE
CLASS="FUNCTION"
>PQprint</CODE
> HTML tags
(Christoph Zwerschke)</P
></LI
><LI
><P
>Fix <SPAN
CLASS="APPLICATION"
>ecpg</SPAN
> crash on AMD64 and PPC
(Neil)</P
></LI
><LI
><P
>Allow <TT
CLASS="LITERAL"
>SETOF</TT
> and <TT
CLASS="LITERAL"
>%TYPE</TT
> to be used
together in function result type declarations</P
></LI
><LI
><P
>Recover properly if error occurs during argument passing
in <SPAN
CLASS="APPLICATION"
>PL/python</SPAN
> (Neil)</P
></LI
><LI
><P
>Fix memory leak in <CODE
CLASS="FUNCTION"
>plperl_return_next</CODE
>
(Neil)</P
></LI
><LI
><P
>Fix <SPAN
CLASS="APPLICATION"
>PL/perl</SPAN
>'s handling of locales on
Win32 to match the backend (Andrew)</P
></LI
><LI
><P
>Various optimizer fixes (Tom)</P
></LI
><LI
><P
>Fix crash when <TT
CLASS="LITERAL"
>log_min_messages</TT
> is set to
<TT
CLASS="LITERAL"
>DEBUG3</TT
> or above in <TT
CLASS="FILENAME"
>postgresql.conf</TT
> on Win32
(Bruce)</P
></LI
><LI
><P
>Fix <SPAN
CLASS="APPLICATION"
>pgxs</SPAN
> <TT
CLASS="LITERAL"
>-L</TT
> library path
specification for Win32, Cygwin, OS X, AIX (Bruce)</P
></LI
><LI
><P
>Check that SID is enabled while checking for Win32 admin
privileges (Magnus)</P
></LI
><LI
><P
>Properly reject out-of-range date inputs (Kris
Jurka)</P
></LI
><LI
><P
>Portability fix for testing presence of <CODE
CLASS="FUNCTION"
>finite</CODE
>
and <CODE
CLASS="FUNCTION"
>isinf</CODE
> during configure (Tom)</P
></LI
><LI
><P
>Improve speed of <TT
CLASS="COMMAND"
>COPY IN</TT
> via libpq, by
avoiding a kernel call per data line (Alon Goldshuv)</P
></LI
><LI
><P
>Improve speed of <TT
CLASS="FILENAME"
>/contrib/tsearch2</TT
> index
creation (Tom)</P
></LI
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