https://github.com/ImageMagick/ImageMagick/issues/497

ImageMagick · May 23, 2017 · 89629b3 · 89629b3
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commit 89629b3
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diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,7 @@
+2017-05-23  7.0.5-8 Cristy  <quetzlzacatenango@image...>
+  * Improper allocation of memory for IM instances without threads (reference
+    https://github.com/ImageMagick/ImageMagick/issues/497).
+
 2017-05-19  7.0.5-7 Cristy  <quetzlzacatenango@image...>
   * Release ImageMagick version 7.0.5-6, GIT revision 20078:7ce2d38:20170519.
 

diff --git a/MagickCore/thread.c b/MagickCore/thread.c
@@ -96,7 +96,7 @@ MagickExport MagickBooleanType CreateMagickThreadKey(MagickThreadKey *key,
       **keys;
 
     keys=(MagickThreadValue **) key;
-    *keys=(MagickThreadValue *) AcquireQuantumMemory(1,sizeof(*keys));
+    *keys=(MagickThreadValue *) AcquireQuantumMemory(1,sizeof(**keys));
     if (*keys != (MagickThreadValue *) NULL)
       {
         (*keys)->number_threads=GetOpenMPMaximumThreads();