From 23e085b2dead13b51fe86d27069895b740f749c0 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Thu, 22 Sep 2022 07:54:06 -0700 Subject: [PATCH] nvme: restrict management ioctls to admin The passthrough commands already have this restriction, but the other operations do not. Require the same capabilities for all users as all of these operations, which include resets and rescans, can be disruptive. Signed-off-by: Keith Busch Signed-off-by: Christoph Hellwig --- drivers/nvme/host/ioctl.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c index d3281f8..a48a79e 100644 --- a/drivers/nvme/host/ioctl.c +++ b/drivers/nvme/host/ioctl.c @@ -764,11 +764,17 @@ long nvme_dev_ioctl(struct file *file, unsigned int cmd, case NVME_IOCTL_IO_CMD: return nvme_dev_user_cmd(ctrl, argp); case NVME_IOCTL_RESET: + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; dev_warn(ctrl->device, "resetting controller\n"); return nvme_reset_ctrl_sync(ctrl); case NVME_IOCTL_SUBSYS_RESET: + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; return nvme_reset_subsystem(ctrl); case NVME_IOCTL_RESCAN: + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; nvme_queue_scan(ctrl); return 0; default: -- 2.7.4