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