| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 07/54] ext4: fix potential integer overflow | Date | Tue, 23 Feb 2016 19:33:24 -0800 |
| |
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
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 @@ -181,7 +181,7 @@ 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;
|