diff -Npur opencv-4.5.2/3rdparty/libtiff/tif_dirread.c opencv-4.5.2-new/3rdparty/libtiff/tif_dirread.c
--- opencv-4.5.2/3rdparty/libtiff/tif_dirread.c	2021-04-02 19:23:54.000000000 +0800
+++ opencv-4.5.2-new/3rdparty/libtiff/tif_dirread.c	2022-05-21 14:36:31.761285562 +0800
@@ -5079,7 +5079,10 @@ TIFFFetchNormalTag(TIFF* tif, TIFFDirEnt
 								_TIFFfree(data);
 							return(0);
 						}
-						_TIFFmemcpy(o,data,(uint32)dp->tdir_count);
+						if (dp->tdir_count > 0 )
+						{
+							_TIFFmemcpy(o,data,(uint32)dp->tdir_count);
+						}
 						o[(uint32)dp->tdir_count]=0;
 						if (data!=0)
 							_TIFFfree(data);