diff options
| author | Johan Hovold <johan@kernel.org> | 2021-04-26 10:11:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-28 13:40:02 +0200 |
| commit | 90642ee9eb581a13569b1c0bd57e85d962215273 (patch) | |
| tree | 3505c20c4bea710f71a260f632957a5f80aa901b /drivers/usb/class/cdc-acm.c | |
| parent | 31720f9e87c032b74de9661e67cfc01414d27052 (diff) | |
net: hso: fix NULL-deref on disconnect regression
commit 2ad5692db72874f02b9ad551d26345437ea4f7f3 upstream.
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>
Reviewed-by: Anirudh Rayabharam <mail@anirudhrb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
0 files changed, 0 insertions, 0 deletions