| commit | f60d38cb02d03f39576f9c7ad13652babded2410 | [log] [tgz] |
|---|---|---|
| author | Edward Adam Davis <eadavis@qq.com> | Sun Jul 21 14:23:12 2024 +0800 |
| committer | Christian Brauner <brauner@kernel.org> | Wed Jul 24 10:53:12 2024 +0200 |
| tree | f2c36c5e65e7db512350db5e3e778c8c7f724728 | |
| parent | b40c8e7a033ff2cafd33adbe50e2a516f88fa223 [diff] |
pidfs: when time ns disabled add check for ioctl
syzbot call pidfd_ioctl() with cmd "PIDFD_GET_TIME_NAMESPACE" and disabled
CONFIG_TIME_NS, since time_ns is NULL, it will make NULL ponter deref in
open_namespace.
Fixes: 5b08bd408534 ("pidfs: allow retrieval of namespace file descriptors") # mainline only
Reported-and-tested-by: syzbot+34a0ee986f61f15da35d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=34a0ee986f61f15da35d
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Link: https://lore.kernel.org/r/tencent_7FAE8DB725EE0DD69236DDABDDDE195E4F07@qq.com
Signed-off-by: Christian Brauner <brauner@kernel.org>