diff options
Diffstat (limited to 'drivers/pci/switch')
| -rw-r--r-- | drivers/pci/switch/switchtec.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index af85d232d200..92b95e8067c0 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -479,6 +479,12 @@ static ssize_t switchtec_dev_write(struct file *filp, const char __user *data, rc = -EFAULT; goto out; } + if (((MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_WRITE) || + (MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_READ)) && + !capable(CAP_SYS_ADMIN)) { + rc = -EPERM; + goto out; + } data += sizeof(stuser->cmd); rc = copy_from_user(&stuser->data, data, size - sizeof(stuser->cmd)); |