audk/CryptoPkg/Library/BaseCryptLib/SysCall
Long Qin 269f3b5180 CryptoPkg/BaseCryptLib: Fix potential integer overflow issue.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1275

The LookupFreeMemRegion() in RuntimeMemAllocate.c is used to look-up
free memory region for runtime resource allocation, which was designed
to support runtime authenticated variable service.
The ReqPages in this function is the required pages to be allocated,
which depends on the malloc() call in internal OpenSSL routines. The
direct offset subtractions on ReqPages may bring possible integer
overflow issue.

This patch is to add the extra parameter checks to remove this possible
overflow risk.

Cc: Ye Ting <ting.ye@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Long Qin <qin.long@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
2018-10-31 11:07:53 +08:00
..
BaseMemAllocation.c CryptoPkg/BaseCryptLib: Fix buffer overflow issue in realloc wrapper 2017-11-06 14:50:17 +08:00
ConstantTimeClock.c CryptoPkg/BaseCryptLib: Adding NULL checking in time() wrapper. 2017-04-07 00:28:56 +08:00
CrtWrapper.c CryptoPkg/CrtLibSupport: add secure_getenv() stub function 2018-05-08 13:29:06 +02:00
RuntimeMemAllocation.c CryptoPkg/BaseCryptLib: Fix potential integer overflow issue. 2018-10-31 11:07:53 +08:00
TimerWrapper.c CryptoPkg: Clean up source files 2018-06-28 11:19:40 +08:00