diff options
| author | Johan Hovold <johan@kernel.org> | 2021-09-07 10:23:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-06 15:31:11 +0200 |
| commit | 0c30a2b7c144dee1a2a6f33073a2266039304968 (patch) | |
| tree | b247a2e59972945ac4f6a19d2dac89c05dddaea9 /include/uapi/linux/byteorder | |
| parent | 40a5f30822e6bb925757066d53514cf5a67362a3 (diff) | |
USB: cdc-acm: fix minor-number release
commit 91fac0741d4817945c6ee0a17591421e7f5ecb86 upstream.
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: cae2bc768d17 ("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>
Diffstat (limited to 'include/uapi/linux/byteorder')
0 files changed, 0 insertions, 0 deletions