From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 3 Oct 2022 03:35:29 +0000 (+0900)
Subject: network: fix use-after-free
X-Git-Tag: v252-rc1~29
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0a8720c7f087f17061a501d50e0dcd87bb58fa32;p=thirdparty%2Fsystemd.git

network: fix use-after-free

If the lifetime of the route is already expired, do not try to
configure it.

Fixes a use-after-free, as the Request object is already freed, thus, we
cannot use Route or Link stored in Request object.
---

diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
index 3f460e0ba4b..f1fba4ff425 100644
--- a/src/network/networkd-route.c
+++ b/src/network/networkd-route.c
@@ -1382,6 +1382,8 @@ static int route_process_request(Request *req, Link *link, Route *route) {
                         }
                 else
                         route_cancel_requesting(route);
+
+                return 1;
         }
 
         r = route_configure(route, sec, link, req);