Re: [kernel-hardening] Re: [PATCH resend 2/2] userns: control capabilities of some user namespaces

2017-11-06 Thread Boris Lukashev
On Mon, Nov 6, 2017 at 6:39 PM, Serge E. Hallyn wrote: > Quoting Boris Lukashev (blukas...@sempervictus.com): >> On Mon, Nov 6, 2017 at 5:14 PM, Serge E. Hallyn wrote: >> > Quoting Daniel Micay (danielmi...@gmail.com): >> >> Substantial added attack surface will nev

Re: [kernel-hardening] Re: [PATCH resend 2/2] userns: control capabilities of some user namespaces

2017-11-06 Thread Boris Lukashev
or what a specific implementation may or may not do, and only looking at "how do we reduce privileged impact on parent context from unprivileged namespaces," this patch does seem to provide a logical way of reducing the privileges available in such a namespace and often needed to mount escapes/impact parent context. -Boris -- Boris Lukashev Systems Architect Semper Victus