linux-kernel - Re: [PATCH] Crypto_user: Make crypto user API available for all net ns

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Date:   Thu, 13 Jul 2017 16:51:10 +0200
From:   Stephan Müller <smueller@...onox.de>
To:     Christian Langrock <christian.langrock@...unet.com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Crypto_user: Make crypto user API available for all net ns

Am Donnerstag, 13. Juli 2017, 16:22:32 CEST schrieb Christian Langrock:

Hi Christian,

> With this patch it's possible to use crypto user API form all
> network namespaces, not only form the initial net ns.

Is this wise?

The crypto_user interface allows root users to change settings in the kernel 
with a global scope. For example, you can deregister ciphers, change the prio 
of ciphers and so on. All of that is visible on a global scale and thus should 
not be possible from namespaces, IMHO.

Ciao
Stephan