Patch "RDMA/ucma: Check that user doesn't overflow QP state" has been added to the 4.14-stable tree

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

RDMA/ucma: Check that user doesn't overflow QP state

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
rdma-ucma-check-that-user-doesn-t-overflow-qp-state.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 <[email protected]> know about it.

From: Leon Romanovsky <[email protected]>
Date: Wed, 7 Mar 2018 18:49:16 +0200
Subject: RDMA/ucma: Check that user doesn't overflow QP state

From: Leon Romanovsky <[email protected]>

commit a5880b84430316e3e1c1f5d23aa32ec6000cc717 upstream.

The QP state is limited and declared in enum ib_qp_state, but ucma user was able to supply any possible (u32) value.

---
 drivers/infiniband/core/ucma.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -1148,6 +1148,9 @@ static ssize_t ucma_init_qp_attr(struct
 	if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
 		return -EFAULT;
 
+	if (cmd.qp_state > IB_QPS_ERR)
+		return -EINVAL;
+
 	ctx = ucma_get_ctx(file, cmd.id);
 	if (IS_ERR(ctx))
 		return PTR_ERR(ctx);

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/rdma-ucma-limit-possible-option-size.patch queue-4.14/rdma-ucma-check-that-user-doesn-t-overflow-qp-state.patch queue-4.14/rdma-mlx5-fix-integer-overflow-while-resizing-cq.patch