Messages in this thread | | | Date | Sat, 23 Feb 2008 09:36:58 -0600 | From | "Serge E. Hallyn" <> | Subject | Re: [PATCH 1/1] file capabilities: simplify signal check |
| |
Quoting Andrew Morton (akpm@linux-foundation.org): > On Wed, 20 Feb 2008 10:15:50 -0600 "Serge E. Hallyn" <serue@us.ibm.com> wrote: > > > >From bd076c7245d02be0cc01b7c09bd7170ec5946492 Mon Sep 17 00:00:00 2001 > > From: Serge E. Hallyn <serue@us.ibm.com> > > Date: Sun, 17 Feb 2008 20:28:07 -0500 > > Subject: [PATCH 1/1] file capabilities: simplify signal check > > > > Simplify the uid equivalence check in cap_task_kill(). Anyone > > can kill a process owned by the same uid. > > > > Without this patch wireshark is reported to fail. > > Strange that a patch titled "simplify...." actually fixes a bug.
Sorry. Yeah that's a bad subject.
> > Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> > > Signed-off-by: Andrew G. Morgan <morgan@kernel.org> > > --- > > security/commoncap.c | 2 +- > > 1 files changed, 1 insertions(+), 1 deletions(-) > > > > diff --git a/security/commoncap.c b/security/commoncap.c > > index 5aba826..bb0c095 100644 > > --- a/security/commoncap.c > > +++ b/security/commoncap.c > > @@ -552,7 +552,7 @@ int cap_task_kill(struct task_struct *p, struct siginfo *info, > > * allowed. > > * We must preserve legacy signal behavior in this case. > > */ > > - if (p->euid == 0 && p->uid == current->uid) > > + if (p->uid == current->uid) > > return 0; > > > > /* sigcont is permitted within same session */ > > I've marked this as needed-in-2.6.24. Was that appropriate?
Yes, thanks. I doubt wireshark is the only thing that'll break otherwise.
thanks, -serge
| |