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(parent: ca486a3) | patch
RDMA/ucma: Don't allow setting RDMA_OPTION_IB_PATH without an RDMA device
authorRoland Dreier <roland@purestorage.com>
Tue, 3 Apr 2018 22:33:01 +0000 (15:33 -0700)
committerJason Gunthorpe <jgg@mellanox.com>
Wed, 4 Apr 2018 03:06:14 +0000 (21:06 -0600)
commit8435168d50e66fa5eae01852769d20a36f9e5e83
treea721c193594199bf9b311d99761df90a00543996tree | snapshot
parentca486a3b338ea0858104bab80d86475de3575966commit | diff
RDMA/ucma: Don't allow setting RDMA_OPTION_IB_PATH without an RDMA device

Check to make sure that ctx->cm_id->device is set before we use it.
Otherwise userspace can trigger a NULL dereference by doing
RDMA_USER_CM_CMD_SET_OPTION on an ID that is not bound to a device.

Cc: <stable@vger.kernel.org>
Reported-by: <syzbot+a67bc93e14682d92fc2f@syzkaller.appspotmail.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
drivers/infiniband/core/ucma.c diff | blob | history
John Crispins staging tree