From: Parav Pandit <parav@nvidia.com>
Date: Thu, 26 Jun 2025 18:58:07 +0000 (+0300)
Subject: RDMA/uverbs: Check CAP_NET_RAW in user namespace for QP create
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0498c2d9984ed2ad75b1cd5ba6abfa1226742df5;p=thirdparty%2Flinux.git

RDMA/uverbs: Check CAP_NET_RAW in user namespace for QP create

Currently, the capability check is done in the default
init_user_ns user namespace. When a process runs in a
non default user namespace, such check fails. Due to this
when a process is running using Podman, it fails to create
the QP.

Since the RDMA device is a resource within a network namespace,
use the network namespace associated with the RDMA device to
determine its owning user namespace.

Fixes: 2dee0e545894 ("IB/uverbs: Enable QP creation with a given source QP number")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Link: https://patch.msgid.link/0e5920d1dfe836817bb07576b192da41b637130b.1750963874.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
---

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 6700c2c661670..4d96e4a678f35 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1451,7 +1451,7 @@ static int create_qp(struct uverbs_attr_bundle *attrs,
 	}
 
 	if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
-		if (!capable(CAP_NET_RAW)) {
+		if (!rdma_uattrs_has_raw_cap(attrs)) {
 			ret = -EPERM;
 			goto err_put;
 		}