Changelog
postgresql-8.4 (8.4.7-1) unstable; urgency=low
* New upstream security/bug fix release: - Fix buffer overrun in "contrib/intarray"'s input function for the query_int type. This bug is a security risk since the function's return address could be overwritten. Thanks to Apple Inc's security team for reporting this issue and supplying the fix. (CVE-2010-4015) - Avoid failures when "EXPLAIN" tries to display a simple-form CASE expression. If the CASE's test expression was a constant, the planner could simplify the CASE into a form that confused the expression-display code, resulting in "unexpected CASE WHEN clause" errors. - Fix assignment to an array slice that is before the existing range of subscripts. If there was a gap between the newly added subscripts and the first pre-existing subscript, the code miscalculated how many entries needed to be copied from the old array's null bitmap, potentially leading to data corruption or crash. - Avoid unexpected conversion overflow in planner for very distant date values. The date type supports a wider range of dates than can be represented by the timestamp types, but the planner assumed it could always convert a date to timestamp with impunity. - Fix pg_restore's text output for large objects (BLOBs) when standard_conforming_strings is on. Although restoring directly to a database worked correctly, string escaping was incorrect if pg_restore was asked for SQL text output and standard_conforming_strings had been enabled in the source database. - Fix erroneous parsing of tsquery values containing ... & !(subexpression) | ... . Queries containing this combination of operators were not executed correctly. The same error existed in "contrib/intarray"'s query_int type and "contrib/ltree"'s ltxtquery type. - Fix bug in "contrib/seg"'s GiST picksplit algorithm. This could result in considerable inefficiency, though not actually incorrect answers, in a GiST index on a seg column. If you have such an index, consider "REINDEX"ing it after installing this update. (This is identical to the bug that was fixed in "contrib/cube" in the previous update.) -- Martin Pitt <email address hidden> Tue, 01 Feb 2011 17:14:21 +0100
