ax25: fix UAF bug in ax25sendcontrol()
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 v5.17.2 by commit 01619aa347d35ac8b79751757784ec6f507a3215, it was introduced in version v5.17.2 by commit 534156dd4ed768e30a43de0036f45dca7c54818f. For more details please see the references link.