lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 6 Mar 2019 22:02:25 +0100
From:   Christian Brauner <christian.brauner@...onical.com>
To:     Tycho Andersen <tycho@...ho.ws>
Cc:     Kees Cook <keescook@...omium.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable@...r.kernel.org
Subject: Re: [PATCH 2/2] seccomp: disallow NEW_LISTENER and TSYNC flags

On Wed, Mar 6, 2019 at 9:46 PM Tycho Andersen <tycho@...ho.ws> wrote:
>
> On Wed, Mar 06, 2019 at 09:39:35PM +0100, Christian Brauner wrote:
> > > +
> > >     /* Prepare the new filter before holding any locks. */
> > >     prepared = seccomp_prepare_user_filter(filter);
> > >     if (IS_ERR(prepared))
> > > @@ -1302,7 +1315,7 @@ static long seccomp_set_mode_filter(unsigned int flags,
> > >             mutex_unlock(&current->signal->cred_guard_mutex);
> > >  out_put_fd:
> > >     if (flags & SECCOMP_FILTER_FLAG_NEW_LISTENER) {
> > > -           if (ret < 0) {
> > > +           if (ret) {
> >
> > Why that change but keep checking if (ret < 0) further up?
>
> Not sure what you mean here. The only other place I see that we check
> something is < 0 in that function is the return value of
> get_unused_fd_flags(), which looks right to me?

The change just seemed it had nothing to do with the rest of the patch.
Just making sure this didn't happen on accident and would cause regressions.

Powered by blists - more mailing lists