File ImageMagick-CVE-2021-20309.patch of Package ImageMagick.30356

Index: ImageMagick-7.0.7-34/MagickCore/fx.c
===================================================================
--- ImageMagick-7.0.7-34.orig/MagickCore/fx.c	2021-04-15 14:21:28.487386928 +0200
+++ ImageMagick-7.0.7-34/MagickCore/fx.c	2021-04-15 14:21:28.499386997 +0200
@@ -5671,8 +5671,8 @@ MagickExport Image *WaveImage(const Imag
       ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
     }
   for (i=0; i < (ssize_t) wave_image->columns; i++)
-    sine_map[i]=fabs(amplitude)+amplitude*sin((double) ((2.0*MagickPI*i)/
-      wave_length));
+    sine_map[i]=fabs(amplitude)+amplitude*sin((double)
+      ((2.0*MagickPI*i)*PerceptibleReciprocal(wave_length)));
   /*
     Wave image.
   */