dm/connector: Only process connector packages from privileged processes
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c
index 1327e1a..54abf9e 100644
--- a/drivers/md/dm-log-userspace-transfer.c
+++ b/drivers/md/dm-log-userspace-transfer.c
@@ -133,6 +133,9 @@
{
struct dm_ulog_request *tfr = (struct dm_ulog_request *)(msg + 1);
+ if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN))
+ return;
+
spin_lock(&receiving_list_lock);
if (msg->len == 0)
fill_pkg(msg, NULL);