Messages in this thread | | | Date | Mon, 26 Apr 2021 11:35:46 +0200 | From | Johan Hovold <> | Subject | Re: [PATCH] net: hso: fix NULL-deref on disconnect regression |
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On Mon, Apr 26, 2021 at 11:29:11AM +0200, Leonardo Antoniazzi wrote: > On Mon, 26 Apr 2021 10:11:49 +0200 > Johan Hovold <johan@kernel.org> wrote: > > > Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device > > unregistration") fixed the racy minor allocation reported by syzbot, but > > introduced an unconditional NULL-pointer dereference on every disconnect > > instead. > > > > Specifically, the serial device table must no longer be accessed after > > the minor has been released by hso_serial_tty_unregister(). > > > > Fixes: 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") > > Cc: stable@vger.kernel.org > > Cc: Anirudh Rayabharam <mail@anirudhrb.com> > > Reported-by: Leonardo Antoniazzi <leoanto@aruba.it> > > Signed-off-by: Johan Hovold <johan@kernel.org> > > ---
> the patch fix the problem
Thanks for confirming.
Next time, please keep the CC list intact when replying so that everyone sees that you've tested it.
Johan
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