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efi: widen operand to avoid overflow

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CID #1287141.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2015-03-13 21:10:12 -05:00
parent 9fff898181
commit 7c5925a448
1 changed files with 1 additions and 1 deletions
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2
src/boot/efi/splash.c
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@ -97,7 +97,7 @@ EFI_STATUS bmp_parse_header(UINT8 *bmp, UINTN size, struct bmp_dib **ret_dib,
return EFI_UNSUPPORTED;
}
row_size = (((dib->depth * dib->x) + 31) / 32) * 4;
row_size = ((UINTN) dib->depth * dib->x + 31) / 32 * 4;
if (file->size - file->offset < dib->y * row_size)
return EFI_INVALID_PARAMETER;
if (row_size * dib->y > 64 * 1024 * 1024)