| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.17 195/324] net: qrtr: Broadcast messages only from control port | Date | Thu, 23 Aug 2018 09:54:21 +0200 |
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4.17-stable review patch. If anyone has any objections, please let me know.
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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 {
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