From 5761e27db9bdf54ad3cec3571950ccb69206427c Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Mon, 13 Nov 2017 16:34:46 +0100
Subject: traverse: avoid out of bounds read

---
 lr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lr.c b/lr.c
index 08d849f..c680cd8 100644
--- a/lr.c
+++ b/lr.c
@@ -2259,7 +2259,7 @@ traverse(const char *path)
 	}
 
 	prefixl = strlen(path);
-	while (path[prefixl-1] == '/')
+	while (prefixl && path[prefixl-1] == '/')
 		prefixl--;
 	if (prefixl > PATH_MAX) {
 		errno = ENAMETOOLONG;
-- 
cgit 1.4.1