sd-dhcp-lease: fix an infinite loop found by the fuzzer

2022-01-29 02:17:39 +00:00
parent 4158af3651
commit 86b06c666b
1 changed files with 2 additions and 4 deletions
@@ -492,10 +492,8 @@ static int lease_parse_routes(

                route->option = SD_DHCP_OPTION_STATIC_ROUTE;
                r = in4_addr_default_prefixlen((struct in_addr*) option, &route->dst_prefixlen);
-                if (r < 0) {
-                        log_debug("Failed to determine destination prefix length from class based IP, ignoring");
-                        continue;
-                }
+                if (r < 0)
+                        return -EINVAL;

                assert_se(lease_parse_be32(option, 4, &addr.s_addr) >= 0);
                route->dst_addr = inet_makeaddr(inet_netof(addr), 0);