A PoC (source and SWF) are attached, along with a screenshot of the rendering of the uninitialized content into a Bitmap. You can "see" the pointers :-)

The root cause here seems to be a "zero" mask value in the shader code, which causing nothing to be written, leaving an uninitialized buffer.


This bug is subject to a 90 day disclosure deadline. If 90 days elapse
without a broadly available patch, then the bug report will automatically
become visible to the public.

 

ShaderJobLeak.as 1.2 KB Download

ShaderJobLeak.swf 986 bytes Download

	shader.png 12.8 KB View Download