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-rw-r--r--security/selinux/selinuxfs.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 9010a3632d6f..00eed842c491 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -649,14 +649,12 @@ static ssize_t sel_write_validatetrans(struct file *file,
if (*ppos != 0)
goto out;
- rc = -ENOMEM;
- req = kzalloc(count + 1, GFP_KERNEL);
- if (!req)
- goto out;
-
- rc = -EFAULT;
- if (copy_from_user(req, buf, count))
+ req = memdup_user_nul(buf, count);
+ if (IS_ERR(req)) {
+ rc = PTR_ERR(req);
+ req = NULL;
goto out;
+ }
rc = -ENOMEM;
oldcon = kzalloc(count + 1, GFP_KERNEL);