1 files changed, 2 insertions, 1 deletions

diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index 7c687d568221..e9aa07929656 100644
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -199,7 +199,8 @@ long user_read(const struct key *key, char __user *buffer, size_t buflen)
         struct user_key_payload *upayload;
         long ret;
 
-        upayload = rcu_dereference(key->payload.data);
+        upayload = rcu_dereference_protected(
+                key->payload.data, rwsem_is_locked(&((struct key *)key)->sem));
         ret = upayload->datalen;
 
         /* we can return the data as is */