diff --git a/fs/smb/client/cifsacl.c b/fs/smb/client/cifsacl.c
index cb4060ba5e31..4ec204d2c774 100644
--- a/fs/smb/client/cifsacl.c
+++ b/fs/smb/client/cifsacl.c
@@ -879,6 +879,7 @@ static void parse_dacl(struct smb_acl *pdacl, char *end_of_acl,
 			dump_ace(ppace[i], end_of_dacl);
 #endif
 			if (mode_from_special_sid &&
+			    ppace[i]->sid.num_subauth >= 3 &&
 			    (compare_sids(&(ppace[i]->sid),
 					  &sid_unix_NFS_mode) == 0)) {
 				/*