https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6245

diff --git a/coders/mat.c b/coders/mat.c
index ae1874635d4e262e9b2bc078fe2edc4fa608659d..24cd32d2f1622b8da60a7da05c01b4889dcb640c 100644 (file)
--- a/coders/mat.c
+++ b/coders/mat.c
@@ -797,8 +797,7 @@ static Image *ReadMATImageV4(const ImageInfo *image_info,Image *image,
         rotated_image->colors = image->colors;
         image->blob = (BlobInfo *) blob;
         AppendImageToList(&image,rotated_image);
-        DeleteImageFromList(&image->previous);
-        image = rotated_image;
+        DeleteImageFromList(&image);
       }
     /*
       Proceed to next image.