PostgreSQL 11.2, 10.7, 9.6.12, 9.5.16, and 9.4.21 Released!
This release changes the behavior in how PostgreSQL interfaces with fsync() and includes fixes for partitioning and over 70 other bugs that were reported over the past three months.
Fix handling of unique indexes with INCLUDE columns on partitioned tables
Ensure that NOT NULL constraints of a partitioned table are honored within its partitions
Several fixes for constraints on partitioned tables
Fix problems with applying ON COMMIT DROP and ON COMMIT DELETE ROWS to partitioned tables and tables with inheritance children
Disallow COPY FREEZE on partitioned tables
Several fixes for the ALTER TABLE .. ADD COLUMN with a non-nullable default feature, including a possible index corruption case
Several fixes in GIN indexes, including avoiding a deadlock with vacuuming and concurrent index insertions (which partially reverts a performance improvement introduced in PostgreSQL 10)
Fix possible crashes in logical replication when index expressions or predicates are in use
Several fixes for the write-ahead log (WAL)
Fix possible crash in UPDATE with a multiple SET clause using a sub-SELECT
Fix crash when zero rows are provided to json[b]_populate_recordset() or json[b]_to_recordset()
Several fixes related to collation handling, including the parsing of collation-sensitive expressions in the arguments of a CALL statement
Several fixes for the query planner, including an improvement to planning speed for large inheritance or partitioning table groups
Several fixes for TRUNCATE
Ensure ALTER TABLE ONLY ADD COLUMN IF NOT EXISTS is processed correctly
Allow UNLISTEN in hot-standby (replica) mode
Fix parsing of space-separated lists of host names in the ldapserver parameter of LDAP authentication entries in pg_hba.conf
Several fixes for ecpg
Several fixes for psql, including having \g target work with COPY TO STDOUT
The random number generation for pgbench is now fully deterministic and platform-independent when --random-seed=N is specified
Fix pg_basebackup and pg_verify_checksums to appropriately ignore temporary files
Several fixes for pg_dump, including having ALTER INDEX SET STATISTICS commands present
Prevent false index-corruption reports from contrib/amcheck caused by inline-compressed data
Support new Makefile variables to help with building extensions
This release fixes two security issues. This release also fixes issues with VACUUM, GIN indexes, and hash indexes that could lead to data corruption, as well as fixes for using parallel queries and logical replication.
Security Issues
* CVE-2018-1052: Fix the processing of partition keys containing multiple expressions
* CVE-2018-1053: Ensure that all temporary files made with "pg_upgrade" are non-world-readable
Bug Fixes and Improvements
* Fix crash and potential disclosure of backend memory when processing partition keys containing multiple expressions
* Fix potential disclosure of temporary files containing database passwords created by pg_upgrade by not allowing these files to be world-accessible
* Fix cases where VACUUM would not remove dead rows if they were updated while "key-share" locked, leading to potential data corruption
* Fix for GIN indexes to prevent bloat by ensuring the pending-insertions list is cleaned up by VACUUM
* Fix potential index corruption with hash indexes due to failure to mark metapages as dirty
* Fix several potential crash scenarios for parallel queries, including when a bitmap heap scan cannot allocate memory
* Fix several potential hang-ups in parallel queries, including when a parallel worker fails to start
* Fix collection of EXPLAIN statistics from parallel workers
* Prevent fake deadlock failures when multiple sessions are running CREATE INDEX CONCURRENTLY
* Fix for trigger behavior when using logical replication
* Several fixes for "walsender" functionality to improve stability as well as visibility into the replication process
* Fix logical decoding to correctly clean up disk files for crashed transactions
* Several fixes for identity columns, including disallowing identity columns on tables derived from composite types and partitions
* Fix handling of list partitioning constraints for partition keys of boolean and array types
* Fix incorrectly generated plans for UPDATE and DELETE queries when a table has a mix of inherited regular and foreign child tables
* Fix incorrect query results from cases involving GROUPING SETS when used with flattened subqueries
* Fix UNION/INTERSECT/EXCEPT over zero columns, e.g. "SELECT UNION SELECT;"
* Several fixes for subqueries within a LATERAL subquery
* Several improvements for query planning estimation
* Allow a client that supports SCRAM channel binding, such as a future version of PostgreSQL or libpq, to connect to a PostgreSQL 10 server
* Fix sample INSTR() functions used to help transition from Oracle(r) PL/SQL to PostgreSQL PL/pgSQL to correctly match Oracle functional behavior
* Fix pg_dump to make permissions (ACL), security label, and comment entries reliably identifiable in archive outputs
* Modify behavior for contrib/cube's "cube ~> int" operator to make it compatible with KNN search. This is a backwards incompatible change and any expression indexes or materialized views using this operator will need to be reindexed and refreshed, respectively.
* Several fixes in contrib/postgres_fdw to prevent query planner errors
* Added modern examples of auto-start scripts for PostgreSQL on macOS in the contrib/start-scripts/macos directory
* Several fixes for Windows, including postmaster startup and compatibility with libperl
* Spinlock fixes and support for Motorola 68K and 88K architectures
The PostgreSQL Global Development Group has released an update to all supported versions of our database system, including 10.1, 9.6.6, 9.5.10, 9.4.15, 9.3.20, and 9.2.24. This release fixes three security issues. This release also fixes issues found in BRIN indexing, logical replication and other bugs reported over the past three months.
All users using the affected versions of PostgreSQL should update as soon as possible. If you use BRIN indexes or contrib/start-scripts, please see the release notes for additional post-upgrade steps.
Security Issues
Three security vulnerabilities have been fixed by this release:
CVE-2017-12172: Start scripts permit database administrator to modify root-owned files
CVE-2017-15098: Memory disclosure in JSON functions
CVE-2017-15099: INSERT ... ON CONFLICT DO UPDATE fails to enforce SELECT privileges
Bug Fixes and Improvements
This update also fixes a number of bugs reported in the last few months. Some of these issues affect only version 10, but many affect all supported versions:
Fix a race condition in BRIN indexing that could cause some rows to not be included in the indexing.
Fix crash when logical decoding is invoked from a PL language function.
Several fixes for logical replication.
Restored behavior for CTEs attached to INSERT/UPDATE/DELETE statements to pre-version 10.
Prevent low-probability crash in processing of nested trigger firings.
Do not evaluate an aggregate function's argument expressions when the conditions in the FILTER clause evaluate to FALSE. This complies with SQL-standard behavior.
Fix incorrect query results when multiple GROUPING SETS columns contain the same simple variable.
Fix memory leak over the lifespan of a query when evaluating a set-returning function from the target list in a SELECT.
Several fixes for parallel query execution, including fixing a crash in the parallel execution of certain queries that contain a certain type of bitmap scan.
Fix json_build_array(), json_build_object(), jsonb_build_array(), and jsonb_build_object() to handle explicit VARIADIC arguments correctly.
Prevent infinite float values from being casted to the numeric type.
Fix autovacuum's “work item” logic to prevent possible crashes and silent loss of work items.
Several fixes for VIEWs around adding columns to the end of a view.
Fix for hashability detection of range data types that are created by a user.
Improvements on using extended statistics on columns for the purposes of query planning.
Prevent idle_in_transaction_session_timeout from being ignored when a statement_timeout occurred earlier.
Fix low-probability loss of NOTIFY messages due more than 2 billion transactions processing before any queries are executed in the session.
Several file system interaction fixes.
Correctly restore the umask setting when file creation fails in COPY or lo_export().
Fix pg_dump to ensure that it emits GRANT commands in a valid order.
Fix pg_basebackup's matching of tablespace paths to canonicalize both paths before comparing to help improve Windows compatibility.
Fix libpq to not require user's home directory to exist when trying to read the "~/.pgpass" file.
Several fixes for ecpg.
This release closes security hole CVE-2016-2193, where a query plan might get reused for more than one ROLE in the same session. This could cause the wrong set of Row Level Security (RLS) policies to be used for the query.
The update also fixes CVE-2016-3065, a server crash bug triggered by using pageinspect with BRIN index pages. Since an attacker might be able to expose a few bytes of server memory, this crash is being treated as a security issue.
Two security issues have been fixed in this release which affect users of specific PostgreSQL features:
CVE-2015-5289: json or jsonb input values constructed from arbitrary user input can crash the PostgreSQL server and cause a denial of service.
CVE-2015-5288: The crypt() function included with the optional pgCrypto extension could be exploited to read a few additional bytes of memory. No working exploit for this issue has been developed.
Security Fixes
* CVE-2015-0241 Buffer overruns in "to_char" functions.
* CVE-2015-0242 Buffer overrun in replacement printf family of functions.
* CVE-2015-0243 Memory errors in functions in the pgcrypto extension.
* CVE-2015-0244 An error in extended protocol message reading.
* CVE-2014-8161 Constraint violation errors can cause display of values in columns which the user would not normally have rights to see.
JSON and JSONB Unicode Escapes
Other Fixes and Improvements
* Cope with the non-ASCII Norwegian Windows locale name.
* Avoid data corruption when databases are moved to new tablespaces and back again.
* Ensure that UNLOGGED tables are correctly copied during ALTER DATABASE operations.
* Avoid deadlocks when locking recently modified rows.
* Fix two SELECT FOR UPDATE query issues.
* Prevent false negative for shortest-first regular expression matches.
* Fix false positives and negatives in tsquery contains operator.
* Fix namespace handling in xpath().
* Prevent row-producing functions from creating empty column names.
* Make autovacuum use per-table cost_limit and cost_delay settings.
* When autovacuum=off, limit autovacuum work to wraparound prevention only.
* Multiple fixes for logical decoding in 9.4.
* Fix transient errors on hot standby queries due to page replacement.
* Prevent duplicate WAL file archiving at end of recovery or standby promotion.
* Prevent deadlock in parallel restore of schema-only dump.
This release adds many new features which enhance PostgreSQL's flexibility, scalability and performance for many different types of database users, including improvements to JSON support, replication and index performance.
