Add notes on important functions and locations for CVE-2017-8890

README.md

+### CVE-2017-8890
+vuln in inet_csk_clone_lock in net/ipv4/inet_connection_sock.c
+- https://elixir.bootlin.com/linux/v3.10.105/source/net/ipv4/inet_connection_sock.c#L674
+
+mc_list set in ip_mc_join_group in net/ipv4/igmp.c
+- https://elixir.bootlin.com/linux/v3.10.105/source/net/ipv4/igmp.c#L1788
+
+freed in sock_close > sock_release > (sock->ops->release) > inet_release in net/ipv4/af_inet.c (found using gdb)
+- https://elixir.bootlin.com/linux/v3.10.105/source/net/ipv4/af_inet.c#L427
+
+exact free of mc_list somewhow in ip_mc_drop_socket using kfree_rcu
+- https://elixir.bootlin.com/linux/v3.10.105/source/net/ipv4/igmp.c#L2297
+
 ### GDB Commands
 ```
 aarch64-linux-gnu-gdb linux-3.10.105/vmlinux