tty: ngsm: add sanity check for gsm->receive in gsmreceive_buf()
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 v5.19.8 by commit 5aa37f9510345a812c0998bcbbc4d88d1dcc4d8b, it was introduced in version v5.19.2 by commit 5e59c010c6862da329db17acca086afd8bea1aa8. For more details please see the references link.