Patch "ext4: fix potential integer overflow" has been added to the 3.14-stable tree

Patch "ext4: fix potential integer overflow" has been added to the 3.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ext4: fix potential integer overflow

to the 3.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ext4-fix-potential-integer-overflow.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 46901760b46064964b41015d00c140c83aa05bcf Mon Sep 17 00:00:00 2001
From: Insu Yun <wuninsu@gmail.com>
Date: Fri, 12 Feb 2016 01:15:59 -0500
Subject: ext4: fix potential integer overflow

From: Insu Yun <wuninsu@gmail.com>

commit 46901760b46064964b41015d00c140c83aa05bcf upstream.

Since sizeof(ext_new_group_data) > sizeof(ext_new_flex_group_data),
integer overflow could be happened.
Therefore, need to fix integer overflow sanitization.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ext4/resize.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -186,7 +186,7 @@ static struct ext4_new_flex_group_data *
 	if (flex_gd == NULL)
 		goto out3;
 
-	if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_flex_group_data))
+	if (flexbg_size >= UINT_MAX / sizeof(struct ext4_new_group_data))
 		goto out2;
 	flex_gd->count = flexbg_size;
 


Patches currently in stable-queue which might be from wuninsu@gmail.com are

queue-3.14/ext4-fix-potential-integer-overflow.patch