gnrc_tcp: abort on unknown option

2019-09-16 12:07:55 +02:00 · 2019-09-16 12:07:55 +02:00 · 9764697a3b
commit 9764697a3b
parent e8b08d304f
1 changed files with 1 additions and 0 deletions
--- a/sys/net/gnrc/transport_layer/tcp/gnrc_tcp_option.c
+++ b/sys/net/gnrc/transport_layer/tcp/gnrc_tcp_option.c
@ -63,6 +63,7 @@ int _option_parse(gnrc_tcp_tcb_t *tcb, tcp_hdr_t *hdr)
            default:
                DEBUG("gnrc_tcp_option.c : _option_parse() : Unknown option found.\
                      KIND=%"PRIu8", LENGTH=%"PRIu8"\n", option->kind, option->length);
+                return -1;
        }

        if (option->length > opt_left) {