File tiff-CVE-2022-0562.patch of Package tiff.32256

Index: tiff-4.0.9/libtiff/tif_dirread.c
===================================================================
--- tiff-4.0.9.orig/libtiff/tif_dirread.c
+++ tiff-4.0.9/libtiff/tif_dirread.c
@@ -4083,7 +4083,9 @@ TIFFReadDirectory(TIFF* tif)
                     goto bad;
                 }
 
-                memcpy(new_sampleinfo, tif->tif_dir.td_sampleinfo, old_extrasamples * sizeof(uint16));
+                if (old_extrasamples > 0)
+                    memcpy(new_sampleinfo, tif->tif_dir.td_sampleinfo, old_extrasamples * sizeof(uint16));
+
                 _TIFFsetShortArray(&tif->tif_dir.td_sampleinfo, new_sampleinfo, tif->tif_dir.td_extrasamples);
                 _TIFFfree(new_sampleinfo);
         }