1 files changed, 3 insertions, 0 deletions

diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index 4cb70dc6e7ad..e50502d8ceb7 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -129,6 +129,9 @@ unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags)
         for (i = 0; i < groups ; i++)
                 if (cred->uc_gids[i] != GROUP_AT(acred->group_info, i))
                         return 0;
+        if (groups < NFS_NGROUPS &&
+            cred->uc_gids[groups] != NOGROUP)
+                return 0;
         return 1;
 }