# Re: \[PATCH\] capabilities: Ambient capability set V1

- From: Christoph Lameter \<hidden\>
- Date: 2015-02-24 15:48:54 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2015/02/4436609
- Thread: https://ratatoskr.run/linux-api/2015/02/4426512/t.md

```text
On Mon, 23 Feb 2015, Andy Lutomirski wrote:

> On Feb 23, 2015 8:41 AM, "Christoph Lameter" [ref] wrote:
> >
> > On Mon, 23 Feb 2015, Andy Lutomirski wrote:
> >
> > > If you set ambient caps and then run a setuid program (without
> > > no_new_privs), then the ambient set *must* be cleared by the kernel
> > > because that's what the setuid program expects.  Yes, the whole
> >
> > Why would a setuid program expect that? I'd say we expect the ambient set
> > to remain in effect. What would break if the ambient set would stay
> > active?
> >
>
> On a total guess: exim, sendmail, sudo, Apache suexec, etc.  Basically
> anything that expects setresuid(nonzero values); execve to drop caps.

Really? We have been running these things for years with the approach of
leaving these caps active.
```