File _service:tar_scm:backport-timesync-check-cmsg-l... of Package systemd

File _service:tar_scm:backport-timesync-check-cmsg-length.patch of Package systemd

From 4e9f1d0a28cc29d1f010b05d74898f222d757cc8 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Sun, 29 Aug 2021 20:55:44 +0900
Subject: [PATCH] timesync: check cmsg length

(cherry picked from commit 37df6d9b8d3a8b34bec5346766ab8093c0f0fc26)

Conflict:NA
Reference:https://github.com/systemd/systemd/commit/4e9f1d0a28cc29d1f010b05d74898f222d757cc8
---
 src/timesync/timesyncd-manager.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/timesync/timesyncd-manager.c b/src/timesync/timesyncd-manager.c
index eae14e8fb2..648e804105 100644
--- a/src/timesync/timesyncd-manager.c
+++ b/src/timesync/timesyncd-manager.c
@@ -467,6 +467,8 @@ static int manager_receive_response(sd_event_source *source, int fd, uint32_t re
 
                 switch (cmsg->cmsg_type) {
                 case SCM_TIMESTAMPNS:
+                        assert(cmsg->cmsg_len == CMSG_LEN(sizeof(struct timespec)));
+
                         recv_time = (struct timespec *) CMSG_DATA(cmsg);
                         break;
                 }
-- 
2.33.0