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MdeModulePkg/HiiDB: Avoid incorrect results of multiplication 

An example:
The codes in function Output8bitPixel in Image.c:
OffsetY = BITMAP_LEN_8_BIT ((UINT32) Image->Width, Ypos);

Both Image->Width and Ypos are of type UINT16. They will be promoted to
int (signed) first, and then perform the multiplication defined by macro
BITMAP_LEN_8_BIT. If the result of multiplication between Image->Width and
Ypos exceeds the range of type int, a potential incorrect results
will be assigned to OffsetY.

This commit adds explicit UINT32 type cast for 'Image->Width' to avoid
possible overflow in the int range. And also fix similar issues in
HiiDatabase.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
This commit is contained in:
Dandan Bi 2017-04-12 11:21:52 +08:00 committed by Hao Wu
parent d508fe87fe
commit f76bc44362
1 changed files with 12 additions and 12 deletions
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24
MdeModulePkg/Universal/HiiDatabaseDxe/Image.c
View File

@ -105,7 +105,7 @@ GetImageIdOrAddress (
case EFI_HII_IIBT_IMAGE_8BIT_TRANS:
Length = sizeof (EFI_HII_IIBT_IMAGE_8BIT_BLOCK) - sizeof (UINT8) +
BITMAP_LEN_8_BIT (
ReadUnaligned16 (&((EFI_HII_IIBT_IMAGE_8BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
(UINT32) ReadUnaligned16 (&((EFI_HII_IIBT_IMAGE_8BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
ReadUnaligned16 (&((EFI_HII_IIBT_IMAGE_8BIT_BLOCK *) CurrentImageBlock)->Bitmap.Height)
);
ImageIdCurrent++;
@ -115,7 +115,7 @@ GetImageIdOrAddress (
case EFI_HII_IIBT_IMAGE_24BIT_TRANS:
Length = sizeof (EFI_HII_IIBT_IMAGE_24BIT_BLOCK) - sizeof (EFI_HII_RGB_PIXEL) +
BITMAP_LEN_24_BIT (
ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
(UINT32) ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Height)
);
ImageIdCurrent++;
@ -453,7 +453,7 @@ Output8bitPixel (
// Convert the pixel from 8 bits to corresponding color.
//
for (Ypos = 0; Ypos < Image->Height; Ypos++) {
OffsetY = BITMAP_LEN_8_BIT (Image->Width, Ypos);
OffsetY = BITMAP_LEN_8_BIT ((UINT32) Image->Width, Ypos);
//
// All bits are meaningful since the bitmap is 8 bits per pixel.
//
@ -493,7 +493,7 @@ Output24bitPixel (
BitMapPtr = Image->Bitmap;
for (Ypos = 0; Ypos < Image->Height; Ypos++) {
OffsetY = BITMAP_LEN_8_BIT (Image->Width, Ypos);
OffsetY = BITMAP_LEN_8_BIT ((UINT32) Image->Width, Ypos);
CopyRgbToGopPixel (&BitMapPtr[OffsetY], &Data[OffsetY], Image->Width);
}
@ -650,7 +650,7 @@ HiiNewImage (
}
NewBlockSize = sizeof (EFI_HII_IIBT_IMAGE_24BIT_BLOCK) - sizeof (EFI_HII_RGB_PIXEL) +
BITMAP_LEN_24_BIT (Image->Width, Image->Height);
BITMAP_LEN_24_BIT ((UINT32) Image->Width, Image->Height);
//
// Get the image package in the package list,
@ -753,7 +753,7 @@ HiiNewImage (
}
WriteUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) ImageBlocks)->Bitmap.Width, Image->Width);
WriteUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) ImageBlocks)->Bitmap.Height, Image->Height);
CopyGopToRgbPixel (((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) ImageBlocks)->Bitmap.Bitmap, Image->Bitmap, Image->Width * Image->Height);
CopyGopToRgbPixel (((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) ImageBlocks)->Bitmap.Bitmap, Image->Bitmap, (UINT32) Image->Width * Image->Height);
//
// Append the block end
@ -896,7 +896,7 @@ IGetImage (
//
CopyMem (&Iibt1bit, CurrentImageBlock, sizeof (EFI_HII_IIBT_IMAGE_1BIT_BLOCK));
ImageLength = sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) *
(Iibt1bit.Bitmap.Width * Iibt1bit.Bitmap.Height);
((UINT32) Iibt1bit.Bitmap.Width * Iibt1bit.Bitmap.Height);
Image->Bitmap = AllocateZeroPool (ImageLength);
if (Image->Bitmap == NULL) {
return EFI_OUT_OF_RESOURCES;
@ -947,7 +947,7 @@ IGetImage (
case EFI_HII_IIBT_IMAGE_24BIT:
Width = ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width);
Height = ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Height);
ImageLength = sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * (Width * Height);
ImageLength = sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * ((UINT32) Width * Height);
Image->Bitmap = AllocateZeroPool (ImageLength);
if (Image->Bitmap == NULL) {
return EFI_OUT_OF_RESOURCES;
@ -1095,7 +1095,7 @@ HiiSetImage (
case EFI_HII_IIBT_IMAGE_8BIT_TRANS:
OldBlockSize = sizeof (EFI_HII_IIBT_IMAGE_8BIT_BLOCK) - sizeof (UINT8) +
BITMAP_LEN_8_BIT (
ReadUnaligned16 (&((EFI_HII_IIBT_IMAGE_8BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
(UINT32) ReadUnaligned16 (&((EFI_HII_IIBT_IMAGE_8BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
ReadUnaligned16 (&((EFI_HII_IIBT_IMAGE_8BIT_BLOCK *) CurrentImageBlock)->Bitmap.Height)
);
break;
@ -1103,7 +1103,7 @@ HiiSetImage (
case EFI_HII_IIBT_IMAGE_24BIT_TRANS:
OldBlockSize = sizeof (EFI_HII_IIBT_IMAGE_24BIT_BLOCK) - sizeof (EFI_HII_RGB_PIXEL) +
BITMAP_LEN_24_BIT (
ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
(UINT32) ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Width),
ReadUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) CurrentImageBlock)->Bitmap.Height)
);
break;
@ -1115,7 +1115,7 @@ HiiSetImage (
// Create the new image block according to input image.
//
NewBlockSize = sizeof (EFI_HII_IIBT_IMAGE_24BIT_BLOCK) - sizeof (EFI_HII_RGB_PIXEL) +
BITMAP_LEN_24_BIT (Image->Width, Image->Height);
BITMAP_LEN_24_BIT ((UINT32) Image->Width, Image->Height);
//
// Adjust the image package to remove the original block firstly then add the new block.
//
@ -1140,7 +1140,7 @@ HiiSetImage (
WriteUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) NewImageBlock)->Bitmap.Width, Image->Width);
WriteUnaligned16 ((VOID *) &((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) NewImageBlock)->Bitmap.Height, Image->Height);
CopyGopToRgbPixel (((EFI_HII_IIBT_IMAGE_24BIT_BLOCK *) NewImageBlock)->Bitmap.Bitmap,
Image->Bitmap, Image->Width * Image->Height);
Image->Bitmap, (UINT32) Image->Width * Image->Height);
CopyMem ((UINT8 *) NewImageBlock + NewBlockSize, (UINT8 *) CurrentImageBlock + OldBlockSize, Part2Size);