s390: avoid format strings leaking into names
This makes sure format strings can't accidentally leak into kernel
interface names.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index ee0e85a..0f47175 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -593,7 +593,7 @@
dev_info->start = dcssblk_find_lowest_addr(dev_info);
dev_info->end = dcssblk_find_highest_addr(dev_info);
- dev_set_name(&dev_info->dev, dev_info->segment_name);
+ dev_set_name(&dev_info->dev, "%s", dev_info->segment_name);
dev_info->dev.release = dcssblk_release_segment;
dev_info->dev.groups = dcssblk_dev_attr_groups;
INIT_LIST_HEAD(&dev_info->lh);
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index cf31d33..a8848db 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -761,7 +761,7 @@
dev = kzalloc(sizeof(struct device), GFP_KERNEL);
if (dev) {
- dev_set_name(dev, priv->internal_name);
+ dev_set_name(dev, "%s", priv->internal_name);
dev->bus = &iucv_bus;
dev->parent = iucv_root;
dev->driver = &vmlogrdr_driver;
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 5222ebe..0e18c5d 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -356,7 +356,7 @@
zops = __ops_lookup(name, variant);
if (!zops) {
- request_module(name);
+ request_module("%s", name);
zops = __ops_lookup(name, variant);
}
if ((!zops) || (!try_module_get(zops->owner)))
