diff -Nur jfsutils-1.1.15_old/fscklog/display.c jfsutils-1.1.15/fscklog/display.c
--- jfsutils-1.1.15_old/fscklog/display.c	2020-01-19 10:38:11.873031611 +0800
+++ jfsutils-1.1.15/fscklog/display.c	2020-01-19 11:00:42.226950905 +0800
@@ -182,7 +182,7 @@
 				} else {
 					/* the record looks ok */
 					msg_txt = &log_entry[log_entry_pos];
-					printf(msg_txt);
+					printf("%s",msg_txt);
 					/*
 					 * set up for the next record
 					 */
diff -Nur jfsutils-1.1.15_old/fscklog/fscklog.c jfsutils-1.1.15/fscklog/fscklog.c
--- jfsutils-1.1.15_old/fscklog/fscklog.c	2020-01-19 10:38:11.873031611 +0800
+++ jfsutils-1.1.15/fscklog/fscklog.c	2020-01-19 11:01:15.377539460 +0800
@@ -252,8 +252,8 @@
 
 	sprintf(debug_detail, " [%s:%d]\n", basename(file_name), line_number);
 
-	printf(msg_string);
-	printf(debug_detail);
+	printf("%s",msg_string);
+	printf("%s",debug_detail);
 
 	return 0;
 }
diff -Nur jfsutils-1.1.15_old/logdump/helpers.c jfsutils-1.1.15/logdump/helpers.c
--- jfsutils-1.1.15_old/logdump/helpers.c	2020-01-19 10:38:11.873031611 +0800
+++ jfsutils-1.1.15/logdump/helpers.c	2020-01-19 11:01:52.548199382 +0800
@@ -95,8 +95,8 @@
 
 	sprintf(debug_detail, " [%s:%d]\n", file_name, line_number);
 
-	printf(msg_string);
-	printf(debug_detail);
+	printf("%s",msg_string);
+	printf("%s",debug_detail);
 
 	return 0;
 }