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The commit adds check in function InternalPrintGraphic() to ensure that
the expression:
Blt->Width * Blt->Height * sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
will not overflow in the UINTN range.
The commit also adds an explicit UINT32 type cast for 'Blt->Width' to
avoid possible overflow in the int range for:
Blt->Width * Blt->Height
Since both Blt->Width and Blt->Height are of type UINT16. They will be
promoted to int (signed) first, and then perform the multiplication
operation. If the result of multiplication between Blt->Width and
Blt->Height exceeds the range of type int, a potential incorrect size will
be passed into function AllocateZeroPool().
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
(cherry picked from commit 9c0e4db3db8d102812ca57f6225290c7ba079ad8)
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