diff --git a/ipc/sem.c b/ipc/sem.c
index 40a8f462a8224b298690cb07892f93afe8c15214..0e0d49bbb867f239be5690968227c53e7c0226c0 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -743,6 +743,8 @@ static unsigned long copy_semid_to_user(void __user *buf, struct semid64_ds *in,
 	    {
 		struct semid_ds out;
 
+		memset(&out, 0, sizeof(out));
+
 		ipc64_perm_to_ipc_perm(&in->sem_perm, &out.sem_perm);
 
 		out.sem_otime	= in->sem_otime;