diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-07-03 10:18:22 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-07-09 15:24:34 +1000 |
| commit | ad394d00908b676dce6b4c5f718b0e71626b13c5 (patch) | |
| tree | d66af5d6d35a66bd8d9a93fac69621ca5601911d /fs | |
| parent | 9ec95c8cebe869675f2da721ac249cd833cb079f (diff) | |
fanotify: info leak in copy_event_to_user()
The ->reserverd field isn't cleared so we leak one byte of stack
information to userspace.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Eric Paris <eparis@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 1ea52f7c031f..e16076d386c4 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -122,6 +122,7 @@ static int fill_event_metadata(struct fsnotify_group *group, metadata->event_len = FAN_EVENT_METADATA_LEN; metadata->metadata_len = FAN_EVENT_METADATA_LEN; metadata->vers = FANOTIFY_METADATA_VERSION; + metadata->reserved = 0; metadata->mask = event->mask & FAN_ALL_OUTGOING_EVENTS; metadata->pid = pid_vnr(event->tgid); if (unlikely(event->mask & FAN_Q_OVERFLOW)) |