4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arun Kumar Neelakantam aneela@codeaurora.org
[ Upstream commit fdf5fd3975666804118e62c69de25dc85cc0909c ]
The broadcast node id should only be sent with the control port id.
Signed-off-by: Arun Kumar Neelakantam aneela@codeaurora.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/qrtr/qrtr.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/net/qrtr/qrtr.c +++ b/net/qrtr/qrtr.c @@ -764,6 +764,10 @@ static int qrtr_sendmsg(struct socket *s node = NULL; if (addr->sq_node == QRTR_NODE_BCAST) { enqueue_fn = qrtr_bcast_enqueue; + if (addr->sq_port != QRTR_PORT_CTRL) { + release_sock(sk); + return -ENOTCONN; + } } else if (addr->sq_node == ipc->us.sq_node) { enqueue_fn = qrtr_local_enqueue; } else {