Re: [PATCH ghak21 V2 3/4] audit: add refused symlink to audit_names

From: Richard Guy Briggs
Date: Mon Mar 12 2018 - 11:30:59 EST


On 2018-03-12 11:12, Paul Moore wrote:
> On Mon, Mar 12, 2018 at 2:31 AM, Richard Guy Briggs <rgb@xxxxxxxxxx> wrote:
> > Audit link denied events for symlinks had duplicate PATH records rather
> > than just updating the existing PATH record. Update the symlink's PATH
> > record with the current dentry and inode information.
> >
> > See: https://github.com/linux-audit/audit-kernel/issues/21
> > Signed-off-by: Richard Guy Briggs <rgb@xxxxxxxxxx>
> > ---
> > fs/namei.c | 1 +
> > 1 file changed, 1 insertion(+)
>
> Why didn't you include this in patch 4/4 like I asked during the
> previous review?

Please see the last comment of:
https://www.redhat.com/archives/linux-audit/2018-March/msg00070.html

> > diff --git a/fs/namei.c b/fs/namei.c
> > index 50d2533..00f5041 100644
> > --- a/fs/namei.c
> > +++ b/fs/namei.c
> > @@ -945,6 +945,7 @@ static inline int may_follow_link(struct nameidata *nd)
> > if (nd->flags & LOOKUP_RCU)
> > return -ECHILD;
> >
> > + audit_inode(nd->name, nd->stack[0].link.dentry, 0);
> > audit_log_link_denied("follow_link", &nd->stack[0].link);
> > return -EACCES;
> > }
>
> paul moore

- RGB

--
Richard Guy Briggs <rgb@xxxxxxxxxx>
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