network: route - add a zero verification for tcp window

2021-01-16 23:04:07 +01:00
parent 0132453c40
commit fd9d7de176
1 changed files with 5 additions and 0 deletions
@@ -2193,6 +2193,11 @@ int config_parse_tcp_window(
                           "Specified TCP %s \"%s\" is too large, ignoring assignment: %m", lvalue, rvalue);
                return 0;
        }
+        if (k == 0) {
+                log_syntax(unit, LOG_WARNING, filename, line, 0,
+                           "Invalid TCP %s \"%s\", ignoring assignment: %m", lvalue, rvalue);
+                return 0;
+        }

        if (streq(lvalue, "InitialCongestionWindow"))
                n->initcwnd = k;