Re: kernel: fix minor infoleak in get_user_ex()

[<cve-assign () mitre org>]

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> get_user_ex(x, ptr) should zero x on failure. It's not a lot of a leak
> (at most we are leaking uninitialized 64bit value off the kernel
> stack, and in a fairly constrained situation
>
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fabbd51863475cd12ac206bdd249aee35af
> https://lwn.net/Articles/705264/

Use CVE-2016-9178.

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CVE Assignment Team
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