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| author |   Leon Romanovsky <leonro@mellanox.com> | 2018-03-07 18:49:16 +0200 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2018-03-07 15:25:40 -0500 |
| commit | a5880b84430316e3e1c1f5d23aa32ec6000cc717 (patch) | |
| tree | 63a8ed9ff3a53e4699b8f8d284c65fb6f904e6b8 /drivers/infiniband | |
| parent | RDMA/mlx5: Fix integer overflow while resizing CQ (diff) | |
| download | linux-dev-a5880b84430316e3e1c1f5d23aa32ec6000cc717.tar.xz linux-dev-a5880b84430316e3e1c1f5d23aa32ec6000cc717.zip | |
RDMA/ucma: Check that user doesn't overflow QP state
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>
Diffstat (limited to '')
| -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 1817dfea8345..3a9d0f5b5881 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -1149,6 +1149,9 @@ 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); |