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

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Message-ID: <6b2cbf61-f1d7-76c7-1361-7d807d05829f@oracle.com>
Date:   Thu, 9 Nov 2017 13:27:47 -0500
From:   chris hyser <chris.hyser@...cle.com>
To:     "Serge E. Hallyn" <serge@...lyn.com>
Cc:     Daniel Micay <danielmicay@...il.com>,
        Mahesh Bandewar (महेश बंडेवार) <maheshb@...gle.com>,
        Mahesh Bandewar <mahesh@...dewar.net>,
        LKML <linux-kernel@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>,
        Kernel-hardening <kernel-hardening@...ts.openwall.com>,
        Linux API <linux-api@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Eric Dumazet <edumazet@...gle.com>,
        David Miller <davem@...emloft.net>
Subject: Re: [kernel-hardening] Re: [PATCH resend 2/2] userns: control
 capabilities of some user namespaces

On 11/09/2017 01:05 PM, Serge E. Hallyn wrote:
> Would the existing capability bounding set not suffice for that?
> 
> The 'permanent' bounding set turns out to not be a good fit for
> the problem being discussed in this thread, but please feel free
> to start a new thread if you want to discuss your use case.

Sure. I will formulate something for a new thread. What seems to be 
asked for here is a way to globally patch the capability sets of a 
entire process subtree.

-chrish