Re: [PATCH v3 1/2] exec: add PR_HIDE_SELF_EXE prctl

[Colin Walters]

On Wed, Jan 25, 2023, at 11:30 AM, Giuseppe Scrivano wrote:
> 
> After reading some comments on the LWN.net article, I wonder if
> PR_HIDE_SELF_EXE should apply to CAP_SYS_ADMIN in the initial user
> namespace or if in this case root should keep the privilege to inspect
> the binary of a process.  If a container runs with that many privileges
> then it has already other ways to damage the host anyway.

Right, that's what I was trying to express with the "make it work the same as map_files".  Hiding the entry entirely even for initial-namespace-root (real root) seems like it's going to potentially confuse profiling/tracing/debugging tools for no good reason.