diff options
| author | Johan Hovold <johan@kernel.org> | 2017-04-26 12:23:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-20 14:28:35 +0200 |
| commit | 55f9811b98f25724ab828fba0f4f8dd5302de405 (patch) | |
| tree | 8e9ec1a75e654bdc94d508d7d57034ae6af33675 | |
| parent | 83f66c9a602613a79c56a1ae5a8c6152fb57ea8d (diff) | |
staging: gdm724x: gdm_mux: fix use-after-free on module unload
commit b58f45c8fc301fe83ee28cad3e64686c19e78f1c upstream.
Make sure to deregister the USB driver before releasing the tty driver
to avoid use-after-free in the USB disconnect callback where the tty
devices are deregistered.
Fixes: 61e121047645 ("staging: gdm7240: adding LTE USB driver")
Cc: Won Kang <wkang77@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/gdm724x/gdm_mux.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c index 400969170d1c..f03e43b1b5f6 100644 --- a/drivers/staging/gdm724x/gdm_mux.c +++ b/drivers/staging/gdm724x/gdm_mux.c @@ -664,9 +664,8 @@ static int __init gdm_usb_mux_init(void) static void __exit gdm_usb_mux_exit(void) { - unregister_lte_tty_driver(); - usb_deregister(&gdm_mux_driver); + unregister_lte_tty_driver(); } module_init(gdm_usb_mux_init); |