Oliver Neukum 1426bd2c9f USB: cdc-wdm: fix race between write and disconnect due to flag abuse ... 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>		2019-08-28 22:48:38 +02:00
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cdc-acm.c	usb: cdc-acm: make sure a refcount is taken early enough	2019-08-15 14:49:16 +02:00
cdc-acm.h	USB: cdc-acm: clean up throttle handling	2019-04-29 16:14:41 +02:00
cdc-wdm.c	USB: cdc-wdm: fix race between write and disconnect due to flag abuse	2019-08-28 22:48:38 +02:00
Kconfig	docs: usb: rename files to .rst and add them to drivers-api	2019-06-20 14:28:36 +02:00
Makefile	USB: add SPDX identifiers to all remaining Makefiles	2017-11-07 15:53:48 +01:00
usblp.c	usb: usblp: use irqsave() in USB's complete callback	2018-06-28 19:36:06 +09:00
usbtmc.c	usbtmc: more sanity checking for packet size	2019-08-21 09:45:46 -07:00