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 v4.19.262 by commit 27f74a47d5b1cf52d48af15993bb1caa31ad8f5b, it was introduced in version v2.6.27 by commit 3712b42d4b1bec29a4232a6673bf2e6dcc5faa68. For more details please see the references link.