1 files changed, 3 insertions, 1 deletions

diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 2e2c91103529..645114ad0a10 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -916,7 +916,9 @@ ssetup_ntlmssp_authenticate:
         }
 
         /* BB check if Unicode and decode strings */
-        if (smb_buf->Flags2 & SMBFLG2_UNICODE) {
+        if (bytes_remaining == 0) {
+                /* no string area to decode, do nothing */
+        } else if (smb_buf->Flags2 & SMBFLG2_UNICODE) {
                 /* unicode string area must be word-aligned */
                 if (((unsigned long) bcc_ptr - (unsigned long) smb_buf) % 2) {
                         ++bcc_ptr;