net: fix information leakage in /proc/net/ptype
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 v4.9.300 by commit be1ca30331c7923c6f376610c1bd6059be9b1908, it was introduced in version v2.6.26 by commit 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50. For more details please see the references link.