[ubuntu/focal-updates] postgresql-12 12.6-0ubuntu0.20.04.1 (Accepted)
Ubuntu Archive Robot
cjwatson+ubuntu-archive-robot at chiark.greenend.org.uk
Mon Feb 15 12:58:53 UTC 2021
postgresql-12 (12.6-0ubuntu0.20.04.1) focal-security; urgency=medium
* New upstream version (LP: #1915254)
+ Fix incorrect detection of concurrent page splits while inserting
into a GiST index (Heikki Linnakangas)
Concurrent insertions could lead to a corrupt index with entries
placed in the wrong pages. It's recommended to reindex any GiST
index that's been subject to concurrent insertions.
+ Fix CREATE INDEX CONCURRENTLY to wait for concurrent prepared
transactions (Andrey Borodin)
At the point where CREATE INDEX CONCURRENTLY waits for all concurrent
transactions to complete so that it can see rows they inserted, it
must also wait for all prepared transactions to complete, for the
same reason. Its failure to do so meant that rows inserted by
prepared transactions might be omitted from the new index, causing
queries relying on the index to miss such rows. In installations that
have enabled prepared transactions (max_prepared_transactions > 0),
it's recommended to reindex any concurrently-built indexes in case
this problem occurred when they were built.
+ Fix information leakage in constraint-violation error messages
(Heikki Linnakangas)
If an UPDATE command attempts to move a row to a different partition
but finds that it violates some constraint on the new partition, and
the columns in that partition are in different physical positions
than in the parent table, the error message could reveal the contents
of columns that the user does not have SELECT privilege on.
(CVE-2021-3393)
+ Details about these and many further changes can be found at:
https://www.postgresql.org/docs/10/static/release-12-6.html
Date: 2021-02-11 12:49:23.831387+00:00
Changed-By: Christian Ehrhardt <christian.ehrhardt at canonical.com>
Signed-By: Ubuntu Archive Robot <cjwatson+ubuntu-archive-robot at chiark.greenend.org.uk>
https://launchpad.net/ubuntu/+source/postgresql-12/12.6-0ubuntu0.20.04.1
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