Not sure how this would get leveraged by itself.
But there are likely lots of kernel calls that have parameters that are
ignored in certain contexts. I would be astonished if a
general-purpose, long-lived, operating existed without that being the
case from time to time.
On 2016-05-19 11:58, Andy Walls wrote:
> On Thu, 2016-05-19 at 11:32 -0400, mle...@ripnet.com wrote:
>
>> I'll comment that the Windows socket implementation isn't in
>> compliance with the spirit of the robustness principle. But, whatevs.
>> Easy enough to just remove that option for the UDP case.
>
> I think it's a bit of a security failing of Linux to allow injection of
> 4 unused bytes into the kernel space from user-space for every locally
> opened UDP socket. I'm not sure how I could exploit it (perhaps coding
> a jump instruction to a no-op sled somewhere nearby?), but I'm not that
> creative.
>
> Meh.
>
> -Andy
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