Merge pull request #12245 from nmeum/pr/gnrc_tcp_unknown_option

gnrc_tcp: abort on unknown option
RIOT-OS · Sep 16, 2019 · 1dcf88e · 1dcf88e
2 parents 56e6887 + 9764697
commit 1dcf88e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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) {