diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-07-08 15:59:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-11 15:38:22 -0700 |
| commit | 0157e289c1a4bdcf3ce388dd4024bf59336e38ce (patch) | |
| tree | db2718b039df5c42474077e55c30e483fa39d53c | |
| parent | f34f6f080ecd0677cfc9f7ed173d250a629b045a (diff) | |
fanotify: info leak in copy_event_to_user()
commit de1e0c40aceb9d5bff09c3a3b97b2f1b178af53f upstream.
The ->reserved 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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 9fde1c00a296..9860f6b2bc3e 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -118,6 +118,7 @@ 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)) |