Re: [Ksummit-discuss] [TECH TOPIC] seccomp feature development

Al Viro <[email protected]> Wed, 20 May 2020 17:31:02 +0100
Newsgroups org.linuxfoundation.lists.ksummit-discuss,dev.linux.lists.ksummit
Message-ID <[email protected]>
On Wed, May 20, 2020 at 09:17:41AM -0700, Kees Cook wrote:
> As recently outlined[1], there are are a number of seccomp topics that
> need discussion:
> 
>  - fd passing
>  - deep argument inspection
>  - changing structure sizes
>  - syscall bitmasks
> 
> Specifically, seccomp needs to grow the ability to inspect Extensible
> Argument syscalls, which requires that it inspect userspace memory
> without Time-of-Check/Time-of-Use races and without double-copying.
> Additionally, since the structures can grow and be nested, there needs
> to be a way to

... catch and kill the bullshit ABI "enhancements" that would attempt that
kind of garbage.  I'm not sure why that is seccomp-related, though...
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