From 61611481f7b599e0526a3782c626b1a9deeb48bd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Iv=C3=A1n=20Ezequiel=20Rodriguez?= Date: Thu, 23 Jul 2026 15:12:59 -0500 Subject: ntsync: reject wait ioctls with zero owner MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit setup_wait() already validates pad and flags but not owner, while Documentation/userspace-api/ntsync.rst requires EINVAL when owner is zero. Reject early before queueing waiters. Signed-off-by: Iván Ezequiel Rodriguez Signed-off-by: Griffin Kroah-Hartman Reviewed-by: Elizabeth Figura Signed-off-by: Elizabeth Figura Link: https://patch.msgid.link/20260723201301.11826-4-zfigura@codeweavers.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/ntsync.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/misc') diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index 02c9d1192812..4a805919bb0c 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -875,6 +875,9 @@ static int setup_wait(struct ntsync_device *dev, if (args->pad || (args->flags & ~NTSYNC_WAIT_REALTIME)) return -EINVAL; + if (!args->owner) + return -EINVAL; + if (size >= sizeof(fds)) return -EINVAL; -- cgit v1.2.3