This is a note to let you know that I've just added the patch titled Bluetooth: hci_bcm: add missing tty-device sanity check to the 4.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bluetooth-hci_bcm-add-missing-tty-device-sanity-check.patch and it can be found in the queue-4.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 95065a61e9bf25fb85295127fba893200c2bbbd8 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan@xxxxxxxxxx> Date: Wed, 29 Mar 2017 18:15:27 +0200 Subject: Bluetooth: hci_bcm: add missing tty-device sanity check From: Johan Hovold <johan@xxxxxxxxxx> commit 95065a61e9bf25fb85295127fba893200c2bbbd8 upstream. Make sure to check the tty-device pointer before looking up the sibling platform device to avoid dereferencing a NULL-pointer when the tty is one end of a Unix98 pty. Fixes: 0395ffc1ee05 ("Bluetooth: hci_bcm: Add PM for BCM devices") Cc: Frederic Danis <frederic.danis@xxxxxxxxxxxxxxx> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/bluetooth/hci_bcm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -287,6 +287,9 @@ static int bcm_open(struct hci_uart *hu) hu->priv = bcm; + if (!hu->tty->dev) + goto out; + mutex_lock(&bcm_device_lock); list_for_each(p, &bcm_device_list) { struct bcm_device *dev = list_entry(p, struct bcm_device, list); @@ -307,7 +310,7 @@ static int bcm_open(struct hci_uart *hu) } mutex_unlock(&bcm_device_lock); - +out: return 0; } Patches currently in stable-queue which might be from johan@xxxxxxxxxx are queue-4.11/usb-serial-ftdi_sio-add-device-id-for-microsemi-arrow-sf2plus-dev-kit.patch queue-4.11/bluetooth-hci_bcm-add-missing-tty-device-sanity-check.patch queue-4.11/bluetooth-hci_intel-add-missing-tty-device-sanity-check.patch queue-4.11/serial-omap-fix-runtime-pm-handling-on-unbind.patch queue-4.11/serial-omap-suspend-device-on-probe-errors.patch queue-4.11/staging-gdm724x-gdm_mux-fix-use-after-free-on-module-unload.patch