CVE-2013-3220

bitcoind and Bitcoin-Qt before 0.4.9rc2, 0.5.x before 0.5.8rc2, 0.6.x
before 0.6.5rc2, and 0.7.x before 0.7.3rc2, and wxBitcoin, do not properly
consider whether a block’s size could require an excessive number of
database locks, which allows remote attackers to cause a denial of service
(split) and enable certain double-spending capabilities via a large block
that triggers incorrect Berkeley DB locking.