On 2018-02-14 09:51, Kees Cook wrote:
> On Wed, Feb 14, 2018 at 8:18 AM, Richard Guy Briggs <r...@redhat.com> wrote:
> > Audit link denied events emit disjointed records when audit is disabled.
> > No records should be emitted when audit is disabled.
> > See: https://github.com/linux-audit/audit-kernel/issues/21
> > Signed-off-by: Richard Guy Briggs <r...@redhat.com>
> > ---
> > kernel/audit.c | 3 +++
> > 1 file changed, 3 insertions(+)
> > diff --git a/kernel/audit.c b/kernel/audit.c
> > index 227db99..4c3fd24 100644
> > --- a/kernel/audit.c
> > +++ b/kernel/audit.c
> > @@ -2261,6 +2261,9 @@ void audit_log_link_denied(const char *operation,
> > const struct path *link)
> > struct audit_buffer *ab;
> > struct audit_names *name;
> > + if (!audit_enabled || audit_dummy_context())
> > + return;
> > +
> > name = kzalloc(sizeof(*name), GFP_NOFS);
> > if (!name)
> > return;
> Doesn't this means errors here would be silent if audit isn't enabled?
> I don't that; sysadmins should see this notification regardless of the
> audit state...
This is a user error and not a system error, so I would think if system
auditing is disabled, they don't care about this kind of error.
Richard Guy Briggs <r...@redhat.com>
Sr. S/W Engineer, Kernel Security, Base Operating Systems
Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
Voice: +1.647.777.2635, Internal: (81) 32635