From: Daniel Axtens <d...@axtens.net> This causes the bitmap to be leaked. Do not permit multiple image headers.
Signed-off-by: Daniel Axtens <d...@axtens.net> Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com> --- grub-core/video/readers/png.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/grub-core/video/readers/png.c b/grub-core/video/readers/png.c index d715c4629..35ae553c8 100644 --- a/grub-core/video/readers/png.c +++ b/grub-core/video/readers/png.c @@ -258,6 +258,9 @@ grub_png_decode_image_header (struct grub_png_data *data) int color_bits; enum grub_video_blit_format blt; + if (data->image_width || data->image_height) + return grub_error (GRUB_ERR_BAD_FILE_TYPE, "png: two image headers found"); + data->image_width = grub_png_get_dword (data); data->image_height = grub_png_get_dword (data); -- 2.11.0 _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
