systemd/backport-timesync-check-cmsg-length.patch

30 lines
1.0 KiB
Diff

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