From 123dd99c6a1ae2ef6fcb5547e51fa58e8c954b51 Mon Sep 17 00:00:00 2001 From: Carlos Garcia Campos Date: Fri, 8 Dec 2017 11:11:38 +0100 Subject: [PATCH 1/2] gxps-images: fix integer overflow in png decoder --- libgxps/gxps-images.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libgxps/gxps-images.c b/libgxps/gxps-images.c index 98c7052..19cb1c0 100644 --- a/libgxps/gxps-images.c +++ b/libgxps/gxps-images.c @@ -286,7 +286,7 @@ gxps_images_create_from_png (GXPSArchive *zip, } stride = cairo_format_stride_for_width (format, png_width); - if (stride < 0) { + if (stride < 0 || png_height >= INT_MAX / stride) { fill_png_error (error, image_uri, NULL); g_object_unref (stream); png_destroy_read_struct (&png, &info, NULL); -- 2.17.1