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| author |   Insu Yun <wuninsu@gmail.com> | 2016-02-12 01:15:59 -0500 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2016-02-12 01:15:59 -0500 |
| commit | 46901760b46064964b41015d00c140c83aa05bcf (patch) | |
| tree | b4d82f27e6063a825c1f98fdb6a2f3c11d07d1be /fs/ext4 | |
| parent | ext4: add a line break for proc mb_groups display (diff) | |
| download | linux-dev-46901760b46064964b41015d00c140c83aa05bcf.tar.xz linux-dev-46901760b46064964b41015d00c140c83aa05bcf.zip | |
ext4: fix potential integer overflow
Since sizeof(ext_new_group_data) > sizeof(ext_new_flex_group_data),
integer overflow could be happened.
Therefore, need to fix integer overflow sanitization.
Cc: stable@vger.kernel.org
Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -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; |