diff -Nru rsyslog-7.4.4/debian/changelog rsyslog-7.4.4/debian/changelog
--- rsyslog-7.4.4/debian/changelog	2015-04-30 19:36:47.000000000 +0000
+++ rsyslog-7.4.4/debian/changelog	2017-07-18 10:25:28.000000000 +0000
@@ -1,3 +1,12 @@
+rsyslog (7.4.4-1ubuntu2.7) trusty; urgency=medium
+
+  * Fixing timestamp abnormals on rsyslog when using cron (LP: #1429427)
+    - bugfix: plug a memleak in imuxsock
+    - commit hash be45099, 7a2e247
+    - debian/patches/bugfix-plug-a-memleak-in-imuxsock.patch
+
+ -- Seyeong Kim <seyeong.kim@canonical.com>  Tue, 18 Jul 2017 09:55:26 +0000
+
 rsyslog (7.4.4-1ubuntu2.6) trusty-proposed; urgency=medium
 
   * debian/usr.sbin.rsyslog: grant read access to /dev/log to cope with
diff -Nru rsyslog-7.4.4/debian/patches/bugfix-plug-a-memleak-in-imuxsock.patch rsyslog-7.4.4/debian/patches/bugfix-plug-a-memleak-in-imuxsock.patch
--- rsyslog-7.4.4/debian/patches/bugfix-plug-a-memleak-in-imuxsock.patch	1970-01-01 00:00:00.000000000 +0000
+++ rsyslog-7.4.4/debian/patches/bugfix-plug-a-memleak-in-imuxsock.patch	2017-07-18 10:28:03.000000000 +0000
@@ -0,0 +1,80 @@
+From 7a2e2473476d2b10a775affd9ac6c62b81c450e5 Mon Sep 17 00:00:00 2001
+From: Tomas Heinrich <theinric@redhat.com>
+Date: Thu, 24 Jul 2014 13:47:14 +0200
+Subject: [PATCH 1/2] bugfix: plug a memleak in imuxsock
+
+The hash table for the system socket was allocated twice. The other
+one being in activateListeners().
+
+This commit practically reverts: 34a77cde2423303da72ab773128a2ddcf41
+The issue seems to be that the hash table is not initialized (to NULL)
+rather then not being allocated.
+---
+ plugins/imuxsock/imuxsock.c | 9 ++-------
+ 1 file changed, 2 insertions(+), 7 deletions(-)
+
+From be45099574189b2f947e3a61f2c38aea43c33da1 Mon Sep 17 00:00:00 2001
+From: Tomas Heinrich <theinric@redhat.com>
+Date: Thu, 24 Jul 2014 16:32:28 +0200
+Subject: [PATCH 2/2] bugfix: plug a memleak in imuxsock
+
+Hash table and rate limiter for the system socket weren't freed.
+
+A side-effect was that the "Last message repeated..." notice didn't
+get printed if rsyslog was shut down before the repetition was broken.
+---
+ plugins/imuxsock/imuxsock.c | 10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+Origin: upstream, https://github.com/rsyslog/rsyslog/commit/7a2e2473476d2b10a775affd9ac6c62b81c450e5
+Origin: upstream, https://github.com/rsyslog/rsyslog/commit/be45099574189b2f947e3a61f2c38aea43c33da1
+Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/rsyslog/+bug/1429427
+
+Index: rsyslog-7.4.4/plugins/imuxsock/imuxsock.c
+===================================================================
+--- rsyslog-7.4.4.orig/plugins/imuxsock/imuxsock.c	2017-07-18 10:24:24.777492000 +0000
++++ rsyslog-7.4.4/plugins/imuxsock/imuxsock.c	2017-07-18 10:24:24.773492000 +0000
+@@ -425,13 +425,17 @@
+ }
+ 
+ 
+-/* discard/Destruct all log sockets except for "socket" 0. Data for it comes from
+- * the constant memory pool - and if not, it is freeed via some other pointer.
+- */
+ static rsRetVal discardLogSockets(void)
+ {
+ 	int i;
+ 
++	/* Clean up rate limiting data for the system socket */
++	if(listeners[0].ht != NULL) {
++		hashtable_destroy(listeners[0].ht, 1); /* 1 => free all values automatically */
++	}
++	ratelimitDestruct(listeners[0].dflt_ratelimiter);
++
++	/* Clean up all other sockets */
+         for (i = 1; i < nfd; i++) {
+ 		if(listeners[i].sockName != NULL) {
+ 			free(listeners[i].sockName);
+@@ -1058,6 +1062,8 @@
+ 				  "create hash table\n");
+ 			runModConf->ratelimitIntervalSysSock = 0;
+ 		}
++	} else {
++		listeners[0].ht = NULL;
+ 	}
+ 	listeners[0].ratelimitInterval = runModConf->ratelimitIntervalSysSock;
+ 	listeners[0].ratelimitBurst = runModConf->ratelimitBurstSysSock;
+@@ -1521,13 +1527,6 @@
+ 	listeners[0].bUnlink = 1;
+ 	listeners[0].bCreatePath = 0;
+ 	listeners[0].bUseSysTimeStamp = 1;
+-	if((listeners[0].ht = create_hashtable(100, hash_from_key_fn, key_equals_fn,
+-		(void(*)(void*))ratelimitDestruct)) == NULL) {
+-		/* in this case, we simply turn off rate-limiting */
+-		DBGPRINTF("imuxsock: turning off rate limiting for system socket "
+-			  "because we could not create hash table\n");
+-		listeners[0].ratelimitInterval = 0;
+-	}
+ 
+ 	/* initialize socket names */
+ 	for(i = 1 ; i < MAXFUNIX ; ++i) {
diff -Nru rsyslog-7.4.4/debian/patches/series rsyslog-7.4.4/debian/patches/series
--- rsyslog-7.4.4/debian/patches/series	2015-01-05 18:52:43.000000000 +0000
+++ rsyslog-7.4.4/debian/patches/series	2017-07-18 10:24:23.000000000 +0000
@@ -3,3 +3,4 @@
 10-initgroups.patch
 CVE-2014-3634.patch
 11-fix-infinite-loop-openvz-vms.patch
+bugfix-plug-a-memleak-in-imuxsock.patch