Fix access-off-end-of-array in clog.c. Sloppy loop coding in set_status_by_pages() resulted in fetching one array element more than it should from the subxids[] array. The odds of this resulting in SIGSEGV are pretty small, but we've certainly seen that happen with similar mistakes elsewhere. While at it, we can get rid of an extra TransactionIdToPage() calculation per loop.
Per report from David Binderman. Back-patch to all supported branches, since this code is quite old. Discussion: https://postgr.es/m/he1pr0802mb2331cba919cbfff0c465eb429c...@he1pr0802mb2331.eurprd08.prod.outlook.com Branch ------ REL9_4_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/c209b5034ecb7cfa2bd09c960bdf0a22afaa0986 Modified Files -------------- src/backend/access/transam/clog.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
