diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index 560a82c6d682..b91f914d292e 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -578,7 +578,7 @@ static int avc_latest_notif_update(u32 seqno, int is_insert)
 		}
 	} else {
 		if (seqno > selinux_avc.avc_cache.latest_notif)
-			selinux_avc.avc_cache.latest_notif = seqno;
+			WRITE_ONCE(selinux_avc.avc_cache.latest_notif, seqno);
 	}
 	spin_unlock_irqrestore(&notif_lock, flag);
 
@@ -1206,5 +1206,6 @@ int avc_has_perm(u32 ssid, u32 tsid, u16 tclass,
 
 u32 avc_policy_seqno(void)
 {
-	return selinux_avc.avc_cache.latest_notif;
+	/* Writers hold notif_lock; readers only sample the sequence number. */
+	return READ_ONCE(selinux_avc.avc_cache.latest_notif);
 }