From 0a8663c84559928af28f6f092679d560b8802147 Mon Sep 17 00:00:00 2001
From: Solar Flare <soflare@users.noreply.github.com>
Date: Wed, 6 Nov 2019 06:45:52 +0800
Subject: [PATCH] fix a buffer overflow bug

---
 src/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main.c b/src/main.c
index acda4be..dfe8894 100644
--- a/src/main.c
+++ b/src/main.c
@@ -49,7 +49,7 @@ static void set_own_dir(const char *argv0) {
 	size_t l = strlen(argv0);
 	while(l && argv0[l - 1] != '/')
 		l--;
-	if(l == 0)
+	if(l == 0 || l >= sizeof(own_dir))
 #ifdef SUPER_SECURE
 		memcpy(own_dir, "/dev/null/", 11);
 #else