pgsql: to_char(): prevent writing beyond the allocated buffer

to_char(): prevent writing beyond the allocated buffer

Previously very long localized month and weekday strings could
overflow the allocated buffers, causing a server crash.

Reported and patch reviewed by Noah Misch. Backpatch to all
supported versions.

Security: CVE-2015-0241

Branch
------
REL9_4_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/56d2bee9db219b21592c6fef9d29ce1d5e3c6c59

Modified Files
--------------
src/backend/utils/adt/formatting.c | 139 ++++++++++++++++++++++++++++++++----
1 file changed, 125 insertions(+), 14 deletions(-)

--
Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-committers