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| author | Leon Romanovsky <leonro@mellanox.com> | 2018-03-07 18:49:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-18 11:17:48 +0100 |
| commit | 52179bea3e4f4161681ce5c9edc4c65e9c5c2ac2 (patch) | |
| tree | e0234592cf19fd41a64fd0eabdb25b2c86feb179 /drivers/infiniband | |
| parent | 42228fa0804a3a01612e855e8b123bae1a06a1e3 (diff) | |
| download | linux-stable-52179bea3e4f4161681ce5c9edc4c65e9c5c2ac2.tar.gz linux-stable-52179bea3e4f4161681ce5c9edc4c65e9c5c2ac2.tar.bz2 linux-stable-52179bea3e4f4161681ce5c9edc4c65e9c5c2ac2.zip | |
RDMA/ucma: Check that user doesn't overflow QP state
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.
Reported-by: syzbot+0df1ab766f8924b1edba@syzkaller.appspotmail.com
Fixes: 75216638572f ("RDMA/cma: Export rdma cm interface to userspace")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/ucma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index 62c2c13072ad..cdac2c9421ab 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -1138,6 +1138,9 @@ static ssize_t ucma_init_qp_attr(struct ucma_file *file, 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); |