diff options
| author | Insu Yun <wuninsu@gmail.com> | 2016-02-12 09:15:59 +0300 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2016-02-24 12:23:19 +0300 |
| commit | b7993fb7ce48ca9ba2cfba6226c0f54db589fb9d (patch) | |
| tree | 7b768ceafcb690aba15fbecf873c0b7feb75c202 | |
| parent | 2698377daeb469a9d68021979d2e506922f788da (diff) | |
| download | linux-b7993fb7ce48ca9ba2cfba6226c0f54db589fb9d.tar.xz | |
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: Jiri Slaby <jslaby@suse.cz>
| -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 831cb305c63f..ae8ce49c0437 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -186,7 +186,7 @@ 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; |