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linux/drivers/usb/class
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Johan Hovold 91fac0741d USB: cdc-acm: fix minor-number release 
If the driver runs out of minor numbers it would release minor 0 and
allow another device to claim the minor while still in use.

Fortunately, registering the tty class device of the second device would
fail (with a stack dump) due to the sysfs name collision so no memory is
leaked.

Fixes: cae2bc768d ("usb: cdc-acm: Decrement tty port's refcount if probe() fail")
Cc: stable@vger.kernel.org      # 4.19
Cc: Jaejoong Kim <climbbb.kim@gmail.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210907082318.7757-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2021-09-14 10:33:40 +02:00
..
cdc-acm.c USB: cdc-acm: fix minor-number release 2021-09-14 10:33:40 +02:00
cdc-acm.h USB: cdc-acm: fix minor-number release 2021-09-14 10:33:40 +02:00
cdc-wdm.c usb: cdc-wdm: fix build error when CONFIG_WWAN_CORE is not set 2021-07-21 10:13:06 +02:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile USB: add SPDX identifiers to all remaining Makefiles 2017-11-07 15:53:48 +01:00
usblp.c USB: usblp: fix a hang in poll() if disconnected 2021-03-10 09:36:13 +01:00
usbtmc.c USB: usbtmc: Fix RCU stall warning 2021-07-27 15:52:37 +02:00