libsystemd-network: disable event sources before unref them

Fixes #20825.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/libsystemd-network/sd-ndisc.c b/src/libsystemd-network/sd-ndisc.c
index 9fff9929f7..0c27b7ea72 100644
--- a/src/libsystemd-network/sd-ndisc.c
+++ b/src/libsystemd-network/sd-ndisc.c
@@ -133,18 +133,19 @@ static void ndisc_reset(sd_ndisc *nd) {
         (void) event_source_disable(nd->timeout_event_source);
         (void) event_source_disable(nd->timeout_no_ra);
         nd->retransmit_time = 0;
-        nd->recv_event_source = sd_event_source_unref(nd->recv_event_source);
+        nd->recv_event_source = sd_event_source_disable_unref(nd->recv_event_source);
         nd->fd = safe_close(nd->fd);
 }
 
 static sd_ndisc *ndisc_free(sd_ndisc *nd) {
         assert(nd);
 
-        nd->timeout_event_source = sd_event_source_unref(nd->timeout_event_source);
-        nd->timeout_no_ra = sd_event_source_unref(nd->timeout_no_ra);
-
         ndisc_reset(nd);
+
+        sd_event_source_unref(nd->timeout_event_source);
+        sd_event_source_unref(nd->timeout_no_ra);
         sd_ndisc_detach_event(nd);
+
         free(nd->ifname);
         return mfree(nd);
 }