diff --git a/SOURCES/0001-sadc-Fix-segfault-that-may-happen-when-appending-dat.patch b/SOURCES/0001-sadc-Fix-segfault-that-may-happen-when-appending-dat.patch
new file mode 100644
index 0000000..913522f
--- /dev/null
+++ b/SOURCES/0001-sadc-Fix-segfault-that-may-happen-when-appending-dat.patch
@@ -0,0 +1,59 @@
+From c2b36aa61e333e2492ced8beaa84f6f19b8cf6ed Mon Sep 17 00:00:00 2001
+From: Sebastien GODARD <sysstat@users.noreply.github.com>
+Date: Sat, 30 Dec 2017 11:16:32 +0100
+Subject: [PATCH] sadc: Fix segfault that may happen when appending data to
+ file
+
+Buffers need to be allocated according to activities present in file so
+that we can append data to that file.
+
+Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>
+
+(cherry-picked from commit 1cf6596368da94ac48656dbb117f4e8c0cde58b9)
+---
+ sadc.c | 29 +++++++++++++++--------------
+ 1 file changed, 15 insertions(+), 14 deletions(-)
+
+diff --git a/sadc.c b/sadc.c
+index 53e9175..fa94d1f 100644
+--- a/sadc.c
++++ b/sadc.c
+@@ -824,20 +824,21 @@ void open_ofile(int *ofd, char ofile[])
+ 			for (i = 0; i < file_hdr.sa_nr_act; i++) {
+ 				
+ 				p = get_activity_position(act, file_act[i].id);
+-				
+-				if ((act[p]->nr != file_act[i].nr) || (act[p]->nr2 != file_act[i].nr2)) {
+-					/*
+-					 * Force number of items (serial lines, network interfaces...)
+-					 * and sub-items to that of the file, and reallocate structures.
+-					 */
+-					act[p]->nr  = file_act[i].nr;
+-					act[p]->nr2 = file_act[i].nr2;
+-					SREALLOC(act[p]->_buf0, void, act[p]->msize * act[p]->nr * act[p]->nr2);
+-				}
+-				
+-				/* Save activity sequence */
+-				id_seq[i] = file_act[i].id;
+-				act[p]->options |= AO_COLLECTED;
++
++                                act[p]->nr = file_act[i].nr;
++                                /*
++                                 * Force number of sub-items to that of the file, and reallocate structures.
++                                 * Note: Structures have been allocated in sa_sys_init() only for activities
++                                 * that are collected. But since activities from file now prevail over them,
++                                 * we need to reallocate.
++                                 */
++                                act[p]->nr2 = file_act[i].nr2;
++                                SREALLOC(act[p]->_buf0, void,
++                                         (size_t) act[p]->msize * (size_t) act[p]->nr * (size_t) act[p]->nr2);
++
++                                /* Save activity sequence */
++                                id_seq[i] = file_act[i].id;
++                                act[p]->options |= AO_COLLECTED;
+ 			}
+ 		}
+ 	}
+-- 
+2.21.0
+
diff --git a/SPECS/sysstat.spec b/SPECS/sysstat.spec
index 8df4360..041afdd 100644
--- a/SPECS/sysstat.spec
+++ b/SPECS/sysstat.spec
@@ -1,7 +1,7 @@
 Summary: Collection of performance monitoring tools for Linux
 Name: sysstat
 Version: 10.1.5
-Release: 18%{?dist}
+Release: 18%{?dist}.1
 License: GPLv2+
 Group: Applications/System
 URL: http://sebastien.godard.pagesperso-orange.fr/
@@ -72,6 +72,8 @@ Patch40: 0001-ignoring-autofs-as-real-filesystem-by-counting-numbe.patch
 Patch41: 0001-man-use-correct-preposition.patch
 # fix CPU usage reporting
 Patch42: 0001-pidstat-Now-handle-processes-with-spaces-in-their-na.patch
+# patch fix segfault when appending to sa file
+Patch43: 0001-sadc-Fix-segfault-that-may-happen-when-appending-dat.patch
 
 Requires: /etc/cron.d, fileutils, grep, sh-utils, textutils
 Requires(post): systemd, systemd-sysv
@@ -144,6 +146,7 @@ The cifsiostat command reports I/O statistics for CIFS file systems.
 %patch40 -p1
 %patch41 -p1
 %patch42 -p1
+%patch43 -p1
 
 iconv -f windows-1252 -t utf8 CREDITS > CREDITS.aux
 mv CREDITS.aux CREDITS
@@ -205,6 +208,9 @@ fi
 %{_localstatedir}/log/sa
 
 %changelog
+* Mon Jan 20 2020 Michal Sekletár <msekleta@redhat.com> - 10.1.5-18.1
+- fix possible segfault when appending to data file (#1793580)
+
 * Thu Mar 28 2019 Michal Sekletár <msekleta@redhat.com> - 10.1.5-18
 - add -f flag to force fdatasync() after sa file update (#1662094)
 - don't call filesystem count functions when we are not collecting fs statistics (#1670060)