https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8004

diff --git a/coders/wpg.c b/coders/wpg.c
index 02e25d7028c45ce1e7d9d35bbad0e080679da70b..160e71785d84672e86341c3601b1bc1b4b4a6eb3 100644 (file)
--- a/coders/wpg.c
+++ b/coders/wpg.c
@@ -1300,7 +1300,7 @@ static Image *ReadWPGImage(const ImageInfo *image_info,
               if (image->next == (Image *) NULL)
                 goto Finish;
               image=SyncNextImageInList(image);
-              image->columns=image->rows=1;
+              image->columns=image->rows=0;
               image->colors=0;
               break;
 
@@ -1500,7 +1500,7 @@ static Image *ReadWPGImage(const ImageInfo *image_info,
               if (image->next == (Image *) NULL)
                 goto Finish;
               image=SyncNextImageInList(image);
-              image->columns=image->rows=1;
+              image->columns=image->rows=0;
               image->colors=0;
               break;