diff options
| author | Edward Srouji <edwards@nvidia.com> | 2023-06-05 13:33:24 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2023-06-11 11:26:06 +0300 |
| commit | 0cadb4db79e1d9eea66711c4031e435c2191907e (patch) | |
| tree | 658f8f6a44515a20058a8bfc8f73daa596bfb5f4 | |
| parent | 58030c76cce473b6cfd630bbecb97215def0dff8 (diff) | |
| download | linux-0cadb4db79e1d9eea66711c4031e435c2191907e.tar.gz | |
RDMA/uverbs: Restrict usage of privileged QKEYs
According to the IB specification rel-1.6, section 3.5.3:
"QKEYs with the most significant bit set are considered controlled
QKEYs, and a HCA does not allow a consumer to arbitrarily specify a
controlled QKEY."
Thus, block non-privileged users from setting such a QKEY.
Cc: stable@vger.kernel.org
Fixes: bc38a6abdd5a ("[PATCH] IB uverbs: core implementation")
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Link: https://lore.kernel.org/r/c00c809ddafaaf87d6f6cb827978670989a511b3.1685960567.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 4796f6a8828caa..e836c9c477f675 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1850,8 +1850,13 @@ static int modify_qp(struct uverbs_attr_bundle *attrs, attr->path_mtu = cmd->base.path_mtu; if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE) attr->path_mig_state = cmd->base.path_mig_state; - if (cmd->base.attr_mask & IB_QP_QKEY) + if (cmd->base.attr_mask & IB_QP_QKEY) { + if (cmd->base.qkey & IB_QP_SET_QKEY && !capable(CAP_NET_RAW)) { + ret = -EPERM; + goto release_qp; + } attr->qkey = cmd->base.qkey; + } if (cmd->base.attr_mask & IB_QP_RQ_PSN) attr->rq_psn = cmd->base.rq_psn; if (cmd->base.attr_mask & IB_QP_SQ_PSN) |