diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index da7db9e22ce7..d955f3dcb3a5 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -921,7 +921,7 @@ static ssize_t smk_set_cipso(struct file *file, const char __user *buf,
 	rc = smk_netlbl_mls(maplevel, mapcatset, &ncats, SMK_CIPSOLEN);
 	if (rc >= 0) {
 		old_cat = skp->smk_netlabel.attr.mls.cat;
-		skp->smk_netlabel.attr.mls.cat = ncats.attr.mls.cat;
+		rcu_assign_pointer(skp->smk_netlabel.attr.mls.cat, ncats.attr.mls.cat);
 		skp->smk_netlabel.attr.mls.lvl = ncats.attr.mls.lvl;
 		synchronize_rcu();
 		netlbl_catmap_free(old_cat);