From ca976c53de0c33160083d36f70bd18d7970f6969 Mon Sep 17 00:00:00 2001
From: Roel Kluin <roel.kluin@gmail.com>
Date: Tue, 22 Sep 2009 16:43:28 -0700
Subject: [PATCH] smbfs: read buffer overflow

This function uses signed integers for the unix_date and local variables -
if a negative number is supplied and the leap-year condition is not met,
month will be 0, leading to a read of day_n[-1]

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/smbfs/proc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/smbfs/proc.c b/fs/smbfs/proc.c
index 9468168b9af..71c29b6670b 100644
--- a/fs/smbfs/proc.c
+++ b/fs/smbfs/proc.c
@@ -509,7 +509,7 @@ date_unix2dos(struct smb_sb_info *server,
 		month = 2;
 	} else {
 		nl_day = (year & 3) || day <= 59 ? day : day - 1;
-		for (month = 0; month < 12; month++)
+		for (month = 1; month < 12; month++)
 			if (day_n[month] > nl_day)
 				break;
 	}
-- 
2.11.4.GIT