My claim would be applied to all virtualized environments, including containers and VMs - not just Docker. Microkernels have a decent shot at keeping the security issue at bay, but even then it can't keep them out forever.

Everything falls to hacking eventually. That's the nature of it, at least till now.

I would note that Docker is primarily a tool for developers and operations folk who are also the author of the software being run. Docker itself is not the risk here, but using it for some use cases may very well be.

I would say, using a Docker would move the vector of attack to a Docker engine and a Linux kernel implementation of cgroups, naming spaces.

But it would still help in preventing such bugs as https://github.com/valvesoftware/steam-for-linux/issues/3671

HN discussion: https://news.ycombinator.com/item?id=8896186