This is a note to let you know that I've just added the patch titled

IB/core: Bound check alternate path port number

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: ib-core-bound-check-alternate-path-port-number.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 4cae8ff136782d77b108cb3a5ba53e60597ba3a6 Mon Sep 17 00:00:00 2001

From: Daniel Jurgens danielj@mellanox.com Date: Tue, 5 Dec 2017 22:30:01 +0200 Subject: IB/core: Bound check alternate path port number

From: Daniel Jurgens danielj@mellanox.com

commit 4cae8ff136782d77b108cb3a5ba53e60597ba3a6 upstream.

The alternate port number is used as an array index in the IB security implementation, invalid values can result in a kernel panic.

Fixes: d291f1a65232 ("IB/core: Enforce PKey security on QPs") Signed-off-by: Daniel Jurgens danielj@mellanox.com Reviewed-by: Parav Pandit parav@mellanox.com Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Doug Ledford dledford@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/infiniband/core/uverbs_cmd.c | 6 ++++++ 1 file changed, 6 insertions(+)

--- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1982,6 +1982,12 @@ static int modify_qp(struct ib_uverbs_fi goto release_qp; }

+ if ((cmd->base.attr_mask & IB_QP_ALT_PATH) && + !rdma_is_port_valid(qp->device, cmd->base.alt_port_num)) { + ret = -EINVAL; + goto release_qp; + } + attr->qp_state = cmd->base.qp_state; attr->cur_qp_state = cmd->base.cur_qp_state; attr->path_mtu = cmd->base.path_mtu;

Patches currently in stable-queue which might be from danielj@mellanox.com are

queue-4.14/ib-core-don-t-enforce-pkey-security-on-smi-mads.patch queue-4.14/ib-core-bound-check-alternate-path-port-number.patch