Untrusted GPGPU code (OpenCL etc) - is it safe? What risks?

Posted by Grzegorz Wierzowiecki on Stack Overflow See other posts from Stack Overflow or by Grzegorz Wierzowiecki
Published on 2011-01-08T19:40:35Z Indexed on 2011/01/08 19:54 UTC
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Filed under:

security

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cuda

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sandbox

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opencl

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GPGPU

There are many approaches when it goes about running untrusted code on typical CPU : sandboxes, fake-roots, virtualization...

What about untrusted code for GPGPU (OpenCL,cuda or already compiled one) ?

Assuming that memory on graphics card is cleared before running such third-party untrusted code,

are there any security risks?
What kind of risks?
Any way to prevent them ? (Possible sandboxing on gpgpu or other technique?)

P.S. I am more interested in gpu binary code level security rather than hight-level gpgpu programming language security (But those solutions are welcome as well). What I mean is that references to gpu opcodes (a.k.a machine code) are welcome.

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