A flaw was found in perl-dbi before version 1.643. Macro ST returns pointer to Perl stack. Other Perl functions which use Perl stack may reallocate Perl stack and therefore pointer returned by ST macro is invalid which may lead to memory corruption.A flaw was found in perl-dbi before version 1.643. A buffer overflow on via an overlong DBD class name in dbih_setup_handle function may lead to data be written past the intended limit.