This is a note to let you know that I've just added the patch titled staging: gdm724x: gdm_mux: fix use-after-free on module unload to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From b58f45c8fc301fe83ee28cad3e64686c19e78f1c Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan@xxxxxxxxxx> Date: Wed, 26 Apr 2017 12:23:04 +0200 Subject: staging: gdm724x: gdm_mux: fix use-after-free on module unload 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: stable <stable@xxxxxxxxxxxxxxx> # 3.12 Cc: Won Kang <wkang77@xxxxxxxxx> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/staging/gdm724x/gdm_mux.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c index aba32e22db0c..996b1f538aae 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); -- 2.12.2