https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8109

diff --git a/coders/tiff.c b/coders/tiff.c
index 0f84a423869b9526c6594f0836b2dbb3fbd4de09..e763f0522373b1fcddb7584b93fb0cb777765d12 100644 (file)
--- a/coders/tiff.c
+++ b/coders/tiff.c
@@ -1362,8 +1362,10 @@ DisableMSCWarning(4127)
     if (0 && (image_info->verbose != MagickFalse))
       TIFFPrintDirectory(tiff,stdout,MagickFalse);
 RestoreMSCWarning
+    photometric=PHOTOMETRIC_RGB;
     if ((TIFFGetField(tiff,TIFFTAG_IMAGEWIDTH,&width) != 1) ||
         (TIFFGetField(tiff,TIFFTAG_IMAGELENGTH,&height) != 1) ||
+        (TIFFGetFieldDefaulted(tiff,TIFFTAG_PHOTOMETRIC,&photometric) != 1) ||
         (TIFFGetFieldDefaulted(tiff,TIFFTAG_COMPRESSION,&compress_tag) != 1) ||
         (TIFFGetFieldDefaulted(tiff,TIFFTAG_FILLORDER,&endian) != 1) ||
         (TIFFGetFieldDefaulted(tiff,TIFFTAG_PLANARCONFIG,&interlace) != 1) ||
@@ -1376,8 +1378,6 @@ RestoreMSCWarning
         TIFFClose(tiff);
         ThrowReaderException(CorruptImageError,"ImproperImageHeader");
       }
-    photometric=PHOTOMETRIC_RGB;
-    (void) TIFFGetFieldDefaulted(tiff,TIFFTAG_PHOTOMETRIC,&photometric);
     if (sample_format == SAMPLEFORMAT_IEEEFP)
       (void) SetImageProperty(image,"quantum:format","floating-point",
         exception);