From 350d66fbbd6634c09f146dc7d5bd57e737dfd0fb Mon Sep 17 00:00:00 2001
From: whali3n51 <whali3n51@gmail.com>
Date: Wed, 18 Sep 2024 22:48:23 +0800
Subject: [PATCH] fix a bug of out-of-bounds reading in the domlsd() function
 in the ls.c

---
 src/ls.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ls.c b/src/ls.c
index 63a74a10..ba7d0db0 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -1051,8 +1051,8 @@ void domlsd(const char *base)
 
     if (*base != 0 && chdir(base) != 0) {
         if (*base++ == '-') {
-            while (!isspace((unsigned char) *base++));
-            while (isspace((unsigned char) *base++));
+            while (*base!=0 && !isspace((unsigned char) *base++));
+            while (*base!=0 && isspace((unsigned char) *base++));
             if (*base != 0 && chdir(base) != 0) {
                 addreply_noformat(550, MSG_STAT_FAILURE2);
                 return;