Commit 10ffddae authored by Johan Hovold's avatar Johan Hovold Committed by Zheng Zengkai
Browse files

USB: cdc-acm: fix use-after-free after probe failure



stable inclusion
from stable-5.10.28
commit 6f86681691c20f6a781533c4c129644765f25752
bugzilla: 51779

--------------------------------

commit 4e49bf37 upstream.

If tty-device registration fails the driver would fail to release the
data interface. When the device is later disconnected, the disconnect
callback would still be called for the data interface and would go about
releasing already freed resources.

Fixes: c93d8195 ("usb: cdc-acm: fix error handling in acm_probe()")
Cc: stable@vger.kernel.org      # 3.9
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: default avatarOliver Neukum <oneukum@suse.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210322155318.9837-3-johan@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarChen Jun <chenjun102@huawei.com>
Acked-by: default avatar  Weilong Chen <chenweilong@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 7c01407e
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