diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index 52ed496d92c3..53f1920c3fcb 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -15,6 +15,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <errno.h>
+#include <limits.h>
 
 #include "trace-event.h"
 #include "debug.h"
@@ -180,6 +181,11 @@ static int read_ftrace_printk(struct tep_handle *pevent)
 	if (!size)
 		return 0;
 
+	if (size == UINT_MAX) {
+		pr_debug("invalid ftrace printk size\n");
+		return -1;
+	}
+
 	buf = malloc(size + 1);
 	if (buf == NULL)
 		return -1;
@@ -357,6 +363,11 @@ static int read_saved_cmdline(struct tep_handle *pevent)
 	if (!size)
 		return 0;
 
+	if (size == ULLONG_MAX) {
+		pr_debug("invalid saved cmdline size");
+		return -1;
+	}
+
 	buf = malloc(size + 1);
 	if (buf == NULL) {
 		pr_debug("memory allocation failure\n");