diff options
| author | Steve French <smfrench@gmail.com> | 2018-03-13 02:29:36 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2018-04-01 20:24:40 -0500 |
| commit | 6188f28bf608ddecc2377663b0f2f709440c19ba (patch) | |
| tree | a13859be080d6bb8f17e14773945a0aa1e43161a /fs/cifs/smb2pdu.c | |
| parent | 262916bc69faf90104aa784d55e10760a4199594 (diff) | |
| download | lwn-6188f28bf608ddecc2377663b0f2f709440c19ba.tar.gz lwn-6188f28bf608ddecc2377663b0f2f709440c19ba.zip | |
Tree connect for SMB3.1.1 must be signed for non-encrypted shares
SMB3.1.1 tree connect was only being signed when signing was mandatory
but needs to always be signed (for non-guest users).
See MS-SMB2 section 3.2.4.1.1
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Diffstat (limited to 'fs/cifs/smb2pdu.c')
| -rw-r--r-- | fs/cifs/smb2pdu.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 4b6920de2541..af62c75b17c4 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1305,6 +1305,11 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, iov[1].iov_base = unc_path; iov[1].iov_len = unc_path_len; + /* 3.11 tcon req must be signed if not encrypted. See MS-SMB2 3.2.4.1.1 */ + if ((ses->server->dialect == SMB311_PROT_ID) && + !encryption_required(tcon)) + req->sync_hdr.Flags |= SMB2_FLAGS_SIGNED; + rc = smb2_send_recv(xid, ses, iov, 2, &resp_buftype, flags, &rsp_iov); cifs_small_buf_release(req); rsp = (struct smb2_tree_connect_rsp *)rsp_iov.iov_base; |