[PATCH] cifs: Read buffer overflow

[Roel Kluin]

Check whether index is within bounds before testing the element.

Signed-off-by: Roel Kluin <roel.kluin at gmail.com>
---
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 60e3c42..cfdb831 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -44,7 +44,7 @@ cifs_ucs2_bytes(const __le16 *from, int maxbytes,
 	int maxwords = maxbytes / 2;
 	char tmp[NLS_MAX_CHARSET_SIZE];
 
-	for (i = 0; from[i] && i < maxwords; i++) {
+	for (i = 0; i < maxword && from[i]; i++) {
 		charlen = codepage->uni2char(le16_to_cpu(from[i]), tmp,
 					     NLS_MAX_CHARSET_SIZE);
 		if (charlen > 0)