From 94a62b864b56d8bad1fb68925dcee7c71015bc54 Mon Sep 17 00:00:00 2001
From: "Ali H. Fardan" <raiz@firemail.cc>
Date: Sun, 28 Aug 2016 18:19:53 +0300
Subject: [PATCH] worked around the buffer overrun in smprintf()

---
 slstatus.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/slstatus.c b/slstatus.c
index 628c0f4..08866d2 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -78,14 +78,15 @@ setstatus(const char *str)
 static char *
 smprintf(const char *fmt, ...)
 {
-	/* FIXME: This code should have
-	bound checks, it is vulnerable to
-	buffer overflows */
 	va_list ap;
+	char tmp[120];
 	char *ret = NULL;
 
 	va_start(ap, fmt);
-	if (vasprintf(&ret, fmt, ap) < 0)
+	vsnprintf(tmp, sizeof(tmp)-1, fmt, ap);
+	tmp[strlen(tmp)+1] = '\0';
+
+	if (asprintf(&ret, "%s", tmp) < 0)
 		return NULL;
 
 	va_end(ap);