add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/net/ipv6/exthdrs_core.c
..
..
@@ -143,6 +143,8 @@
143
143
 			optlen = 1;
144
144
 			break;
145
145
 		default:
146
+			if (len < 2)
147
+				goto bad;
146
148
 			optlen = nh[offset + 1] + 2;
147
149
 			if (optlen > len)
148
150
 				goto bad;