Oliver Neukum 0d743d816a USB: cdc-wdm: fix race between write and disconnect due to flag abuse ... commit 1426bd2c9f7e3126e2678e7469dca9fd9fc6dd3e upstream. In case of a disconnect an ongoing flush() has to be made fail. Nevertheless we cannot be sure that any pending URB has already finished, so although they will never succeed, they still must not be touched. The clean solution for this is to check for WDM_IN_USE and WDM_DISCONNECTED in flush(). There is no point in ever clearing WDM_IN_USE, as no further writes make sense. The issue is as old as the driver. Fixes: afba937e54 ("USB: CDC WDM driver") Reported-by: syzbot+d232cca6ec42c2edb3fc@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20190827103436.21143-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-09-06 10:18:16 +02:00
..
cdc-acm.c	usb: cdc-acm: make sure a refcount is taken early enough	2019-08-25 10:53:02 +02:00
cdc-acm.h	cdc-acm: fix abnormal DATA RX issue for Mediatek Preloader.	2019-01-13 10:05:30 +01:00
cdc-wdm.c	USB: cdc-wdm: fix race between write and disconnect due to flag abuse	2019-09-06 10:18:16 +02:00
Kconfig
Makefile
usblp.c	usblp: do not set TASK_INTERRUPTIBLE before lock	2015-11-19 16:31:42 -08:00
usbtmc.c	USB: usbtmc: add missing endpoint sanity check	2017-03-30 09:35:19 +02:00