drivers: net: slip: fix NPD bug in sltxtimeout()
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 v4.9.311 by commit 113284fe48770841e157e338bf3a2e9f197a8b50. For more details please see the references link.