Integrated: 8302151: BMPImageReader throws an exception reading BMP images

[Jayathirth D V]

On Wed, 15 Feb 2023 13:18:31 GMT, Jayathirth D V <jdv at openjdk.org> wrote:

> We have check in BMPImageReader, where we verify image data size using BMP file size and bitmap offset value.
> But we can't rely on this calculation when we have color palette. Also color palette is necessary in BMP when bits per pixel is less than 16 according to BMP specification(https://learn.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-bitmapv4header).
> 
> Now extra checks are added to not perform this check when we have color palette or bpp is less than 16.
> 
> Also when bitsPerPixel was less than 8 it was getting down-casted to 0. So this is also resolved by making this check for >=16bpp and not doing (bitsPerPixel / 8)

This pull request has now been integrated.

Changeset: aa10f0d3
Author:    Jayathirth D V <jdv at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/aa10f0d3ee5d77d83950c9ed4aab11589b822ff4
Stats:     68 lines in 2 files changed: 66 ins; 0 del; 2 mod

8302151: BMPImageReader throws an exception reading BMP images

Reviewed-by: serb, tr

-------------

PR: https://git.openjdk.org/jdk/pull/12573