ImageMagick/CVE-2020-27771.patch
2021-03-31 10:40:28 +08:00

51 lines
2.2 KiB
Diff

From a07ecde4c1c3a3efaa628434adc903295f6bb2b3 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Mon, 14 Oct 2019 19:41:20 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/1753
---
coders/pdf.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/coders/pdf.c b/coders/pdf.c
index 4da13db33..dd1a504e5 100644
--- a/coders/pdf.c
+++ b/coders/pdf.c
@@ -1991,7 +1991,7 @@ RestoreMSCWarning
break;
indexes=GetVirtualIndexQueue(image);
for (x=0; x < (ssize_t) image->columns; x++)
- *q++=(unsigned char) GetPixelIndex(indexes+x);
+ *q++=(unsigned char) ((ssize_t) GetPixelIndex(indexes+x));
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,
@@ -2033,7 +2033,7 @@ RestoreMSCWarning
indexes=GetVirtualIndexQueue(image);
for (x=0; x < (ssize_t) image->columns; x++)
Ascii85Encode(image,(unsigned char)
- GetPixelIndex(indexes+x));
+ ((ssize_t) GetPixelIndex(indexes+x)));
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,
@@ -2491,7 +2491,7 @@ RestoreMSCWarning
break;
indexes=GetVirtualIndexQueue(tile_image);
for (x=0; x < (ssize_t) tile_image->columns; x++)
- *q++=(unsigned char) GetPixelIndex(indexes+x);
+ *q++=(unsigned char) ((ssize_t) GetPixelIndex(indexes+x));
}
#if defined(MAGICKCORE_ZLIB_DELEGATE)
if (compression == ZipCompression)
@@ -2525,7 +2525,8 @@ RestoreMSCWarning
break;
indexes=GetVirtualIndexQueue(tile_image);
for (x=0; x < (ssize_t) tile_image->columns; x++)
- Ascii85Encode(image,(unsigned char) GetPixelIndex(indexes+x));
+ Ascii85Encode(image,(unsigned char)
+ ((ssize_t) GetPixelIndex(indexes+x)));
}
Ascii85Flush(image);
break;