core: limit the number of units that can be requested over ListUnitsByNames

2026-04-29 12:58:58 +02:00
parent 0d71d58da0
commit 51a88ac723
1 changed files with 4 additions and 0 deletions
@@ -971,6 +971,10 @@ static int method_list_units_by_names(sd_bus_message *message, void *userdata, s
        if (r < 0)
                return r;

+        if (strv_length(units) > MAX(hashmap_size(m->units), (unsigned) MANAGER_MAX_NAMES / 2))
+                return sd_bus_error_set(reterr_error, SD_BUS_ERROR_LIMITS_EXCEEDED,
+                                        "Too many unit names requested.");
+
        r = sd_bus_message_new_method_return(message, &reply);
        if (r < 0)
                return r;