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 v5.15.75 by commit 7bfa18b05f381162c9d38192bbf0179f1142dd38, it was introduced in version v2.6.27 by commit 3712b42d4b1bec29a4232a6673bf2e6dcc5faa68. For more details please see the references link.