Re: [PATCH v18 01/15] Add PR_{GET,SET}_NO_NEW_PRIVS to prevent execve from granting privs

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To: Andrew Lutomirski <luto@xxxxxxx>
Subject: Re: [PATCH v18 01/15] Add PR_{GET,SET}_NO_NEW_PRIVS to prevent execve from granting privs
From: James Morris <jmorris@xxxxxxxxx>
Date: Fri, 13 Apr 2012 14:34:00 +1000 (EST)
Cc: Will Drewry <wad@xxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-man@xxxxxxxxxxxxxxx, linux-security-module@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, kernel-hardening@xxxxxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, arnd@xxxxxxxx, "David S. Miller" <davem@xxxxxxxxxxxxx>, hpa@xxxxxxxxx, mingo@xxxxxxxxxx, Oleg Nesterov <oleg@xxxxxxxxxx>, peterz@xxxxxxxxxxxxx, rdunlap@xxxxxxxxxxxx, mcgrathr@xxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, Eric Paris <eparis@xxxxxxxxxx>, Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>, djm@xxxxxxxxxxx, scarybeasts@xxxxxxxxx, indan@xxxxxx, pmoore@xxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, eric.dumazet@xxxxxxxxx, markus@xxxxxxxxxxxx, coreyb@xxxxxxxxxxxxxxxxxx, Kees Cook <keescook@xxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxxxxxx>, Stephen Smalley <sds@xxxxxxxxxxxxx>
In-reply-to: <CAObL_7ER32AesD6bHk591ss0hTFmp0bjVOKV9oEdhiFwCEVOBA@mail.gmail.com>
User-agent: Alpine 2.02 (LRH 1266 2009-07-14)

On Thu, 12 Apr 2012, Andrew Lutomirski wrote:

> > What about dynamic transitions in SELinux ?
> >
> 
> What's a dynamic transition?

The security label can be changed without an exec:

See selinux_setprocattr(), for "current".


- James
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James Morris
<jmorris@xxxxxxxxx>
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