diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c
index b29e78b517bf..a3c016a11e27 100644
--- a/fs/smb/server/oplock.c
+++ b/fs/smb/server/oplock.c
@@ -1534,6 +1534,10 @@ struct lease_ctx_info *parse_lease_state(void *open_req, bool is_dir)
 	if (sizeof(struct lease_context_v2) == le32_to_cpu(cc->DataLength)) {
 		struct create_lease_v2 *lc = (struct create_lease_v2 *)cc;
 
+		if (le16_to_cpu(cc->DataOffset) + le32_to_cpu(cc->DataLength) <
+		    sizeof(struct create_lease_v2) - 4)
+			return NULL;
+
 		memcpy(lreq->lease_key, lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
 		if (is_dir) {
 			lreq->req_state = lc->lcontext.LeaseState &
@@ -1551,6 +1555,10 @@ struct lease_ctx_info *parse_lease_state(void *open_req, bool is_dir)
 	} else {
 		struct create_lease *lc = (struct create_lease *)cc;
 
+		if (le16_to_cpu(cc->DataOffset) + le32_to_cpu(cc->DataLength) <
+		    sizeof(struct create_lease))
+			return NULL;
+
 		memcpy(lreq->lease_key, lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
 		lreq->req_state = lc->lcontext.LeaseState;
 		lreq->flags = lc->lcontext.LeaseFlags;