Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system call filtering

Pekka Enberg
2011-05-26T08:57:54Z

Hi Avi,

On Thu, May 26, 2011 at 11:49 AM, Avi Kivity <avi@redhat.com> wrote:
> You mean each thread will have a different security context?  I don't see
> the point.  All threads share all of memory so it would be trivial for one
> thread to exploit another and gain all of its privileges.

So how would that happen? I'm assuming that once the security context
has been set up for a thread, you're not able to change it after that.
You'd be able to exploit other threads through shared memory but how
would you gain privileges?

Pekka