From a65e9d344738f53a79f4325ad967556bb56518bc Mon Sep 17 00:00:00 2001
From: NOKUBI Takatsugu <knok@daionet.gr.jp>
Date: Thu, 14 Jun 2012 16:49:11 +0900
Subject: [PATCH] Fix buffer overflow

---
 ChangeLog    | 6 ++++++
 lib/chalib.c | 9 +++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index e600b34..58bc140 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-06-14  NOKUBI Takatsugu  <knok@daionet.gr.jp>
+
+	* lib/chalib.c (chasen_sparse_main): 
+	fix buffer overflow 
+	JVN#16901583 https://jvn.jp/jp/JVN16901583/index.html
+
 2007-07-23  Asahara Masayuki  <masayu-a@is.naist.jp>
 
 	* lib/tokenizer.c (cha_tok_parse): 
diff --git a/lib/chalib.c b/lib/chalib.c
index 5d79e13..cddf51b 100644
--- a/lib/chalib.c
+++ b/lib/chalib.c
@@ -306,9 +306,14 @@ chasen_sparse_main(char *input, FILE *output)
      */
     while (*input) {
 	int c = 0, len, cursor;
-	if ((crlf = strpbrk(input, "\r\n")) == NULL)
+	if ((crlf = strpbrk(input, "\r\n")) == NULL) {
 	    len = strlen(input);
-	else {
+	    if (len >= CHA_INPUT_SIZE) {
+		len = CHA_INPUT_SIZE - 1;
+		crlf = input + CHA_INPUT_SIZE - 2;
+		c = 0;
+	    }
+	} else {
 	    len = crlf - input;
 	    c = *crlf;
 	    *crlf = '\0';