From c881a23fb6f7eb901155d25ba8dd1af0b8c7923b Mon Sep 17 00:00:00 2001 From: Niklas Cassel Date: Fri, 26 Mar 2021 19:48:00 +0000 Subject: [PATCH] nvme: disallow passthru cmd from targeting a nsid != nsid of the block dev MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit When a passthru command targets a specific namespace, the ns parameter to nvme_user_cmd()/nvme_user_cmd64() is set. However, there is currently no validation that the nsid specified in the passthru command targets the namespace/nsid represented by the block device that the ioctl was performed on. Add a check that validates that the nsid in the passthru command matches that of the supplied namespace. Signed-off-by: Niklas Cassel Reviewed-by: Javier González Reviewed-by: Sagi Grimberg Reviewed-by: Kanchan Joshi Signed-off-by: Christoph Hellwig --- drivers/nvme/host/core.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 11fca64..3f3b985 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1632,6 +1632,12 @@ static int nvme_user_cmd(struct nvme_ctrl *ctrl, struct nvme_ns *ns, return -EFAULT; if (cmd.flags) return -EINVAL; + if (ns && cmd.nsid != ns->head->ns_id) { + dev_err(ctrl->device, + "%s: nsid (%u) in cmd does not match nsid (%u) of namespace\n", + current->comm, cmd.nsid, ns->head->ns_id); + return -EINVAL; + } memset(&c, 0, sizeof(c)); c.common.opcode = cmd.opcode; @@ -1676,6 +1682,12 @@ static int nvme_user_cmd64(struct nvme_ctrl *ctrl, struct nvme_ns *ns, return -EFAULT; if (cmd.flags) return -EINVAL; + if (ns && cmd.nsid != ns->head->ns_id) { + dev_err(ctrl->device, + "%s: nsid (%u) in cmd does not match nsid (%u) of namespace\n", + current->comm, cmd.nsid, ns->head->ns_id); + return -EINVAL; + } memset(&c, 0, sizeof(c)); c.common.opcode = cmd.opcode; -- 2.7.4