Re: [PATCH 1/2] procfs: restore 0400 permissions on/proc/*/{syscall,stack,personality}

[Al Viro]

On Mon, Aug 26, 2013 at 09:49:48AM -0700, Eric W. Biederman wrote:

> How does changing the permissions to S_IRUSR prevent someone from
> opening the file before, and reading the file after a suid exec?
> 
> > This patch restores the old mode which was 0400
> 
> Which seems to add no security whatsoever and obscure the fact that
> anyone who cares can read the file so what is the point?

Two words: "security sclerosis".  Both patches NAKed, of course.
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