mISDN: fix use-after-free bugs in l1oip timer handlers
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.331 by commit 1ba21168faf881c23c270605834d01af260cbb72, it was introduced in version v2.6.27 by commit 3712b42d4b1bec29a4232a6673bf2e6dcc5faa68. For more details please see the references link.