diff options
| author |   Johan Hovold <johan@kernel.org> | 2019-10-09 19:09:43 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-10 12:41:19 +0200 |
| commit | 6353001852776e7eeaab4da78922d4c6f2b076af (patch) | |
| tree | 06d23aef9ed68cdd169f2666bcfd41cae100a48c /drivers | |
| parent | USB: usb-skeleton: fix NULL-deref on disconnect (diff) | |
| download | linux-dev-6353001852776e7eeaab4da78922d4c6f2b076af.tar.xz linux-dev-6353001852776e7eeaab4da78922d4c6f2b076af.zip | |
USB: usb-skeleton: fix use-after-free after driver unbind
The driver failed to stop its read URB on disconnect, something which
could lead to a use-after-free in the completion handler after driver
unbind in case the character device has been closed.
Fixes: e7389cc9a7ff ("USB: skel_read really sucks royally")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20191009170944.30057-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/usb-skeleton.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index c2843fcfa52d..be311787403e 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -575,6 +575,7 @@ static void skel_disconnect(struct usb_interface *interface) dev->disconnected = 1; mutex_unlock(&dev->io_mutex); + usb_kill_urb(dev->bulk_in_urb); usb_kill_anchored_urbs(&dev->submitted); /* decrement our usage count */ |