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-testing 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 be merged to the staging-next branch sometime soon, after it passes testing, and the merge window is open. 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