diff --git a/drivers/md/dm-core.h b/drivers/md/dm-core.h
index 595e87e03d4344ce27aa49ec2ad27b5b00697531..ed728583669271a22018bab354c3e3a97e0dcd6c 100644
--- a/drivers/md/dm-core.h
+++ b/drivers/md/dm-core.h
@@ -19,6 +19,8 @@
 #include "dm.h"
 
 #define DM_RESERVED_MAX_IOS		1024
+#define DM_MAX_TARGETS			1048576
+#define DM_MAX_TARGET_PARAMS		1024
 
 struct dm_kobject_holder {
 	struct kobject kobj;
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index b95f8c4ed6e982a77432b1177bba99b99766b148..ea519c4fa7b3ab3d9418bb54473fb7dc37d4311a 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1771,7 +1771,8 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kern
 	if (copy_from_user(param_kernel, user, minimum_data_size))
 		return -EFAULT;
 
-	if (param_kernel->data_size < minimum_data_size)
+	if (unlikely(param_kernel->data_size < minimum_data_size) ||
+	    unlikely(param_kernel->data_size > DM_MAX_TARGETS * DM_MAX_TARGET_PARAMS))
 		return -EINVAL;
 
 	secure_data = param_kernel->flags & DM_SECURE_DATA_FLAG;
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 78627402b5fbdfa7eec61c9009c6396949daea29..eb95b5ce7b8fe2d2f124a848d45039de6379af9b 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -144,7 +144,12 @@ static int alloc_targets(struct dm_table *t, unsigned int num)
 int dm_table_create(struct dm_table **result, fmode_t mode,
 		    unsigned num_targets, struct mapped_device *md)
 {
-	struct dm_table *t = kzalloc(sizeof(*t), GFP_KERNEL);
+	struct dm_table *t;
+
+	if (num_targets > DM_MAX_TARGETS)
+		return -EOVERFLOW;
+
+	t = kzalloc(sizeof(*t), GFP_KERNEL);
 
 	if (!t)
 		return -ENOMEM;
@@ -158,7 +163,7 @@ int dm_table_create(struct dm_table **result, fmode_t mode,
 
 	if (!num_targets) {
 		kfree(t);
-		return -ENOMEM;
+		return -EOVERFLOW;
 	}
 
 	if (alloc_targets(t, num_targets)) {