``` tok = find_by_keyword(tokens, K_NETWORK_STATUS_VERSION); tor_assert(tok); if (tok->n_args > 1) { int flavor = networkstatus_parse_flavor_name(tok->args[1]); if (flavor < 0) { log_warn(LD_DIR, "Can't parse document with unknown flavor %s", escaped(tok->args[2])); goto err; } ns->flavor = flav = flavor; } ``` `networkstatus_parse_vote_from_string()` validates the **second** argument of `network-status-version` which is the flavor of the consensus. If the flavor is invalid it log_warn()s the **third** argument which is not guaranteed to exist. This means that `escaped()` receives a non-allocated section of memory as its argument and treats it as a pointer to a string; this should lead to a segfault.