Index: /trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp
===================================================================
--- /trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp	(revision 54771)
+++ /trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp	(revision 54772)
@@ -3119,6 +3119,7 @@
     else
     {
-        /* Allocate and initialize texture memory.  (Passing the zero filled pSurfaceData solves
-           the fedora 21 corruption issues (launchpad, background, search field, login).) */
+        /* Allocate and initialize texture memory.  Passing the zero filled pSurfaceData avoids
+           exposing random host memory to the guest and helps a with the fedora 21 surface
+           corruption issues (launchpad, background, search field, login). */
         glTexImage2D(GL_TEXTURE_2D,
                      0,