diff options
| author | Insu Yun <wuninsu@gmail.com> | 2016-02-12 01:15:59 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-25 12:01:15 -0800 |
| commit | 600d41f4ecb53edb540fa00a34a78ea6e5c9f9f7 (patch) | |
| tree | f43ef5ab7e482ee232d4772d8e708083e3b794d0 | |
| parent | 33f48f8ab0b94fdd1249f561b15c872c36e560c8 (diff) | |
ext4: fix potential integer overflow
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>
| -rw-r--r-- | fs/ext4/resize.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index ad62d7acc315..34038e3598d5 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -198,7 +198,7 @@ static struct ext4_new_flex_group_data *alloc_flex_gd(unsigned long flexbg_size) 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; |