evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

SMB3: Validate negotiate request must always be signed

Browse source 
commit 4587eee04e2ac7ac3ac9fa2bc164fb6e548f99cd upstream.

According to MS-SMB2 3.2.55 validate_negotiate request must
always be signed. Some Windows can fail the request if you send it unsigned

See kernel bugzilla bug 197311

CC: Stable <stable@vger.kernel.org>
Acked-by: Ronnie Sahlberg <lsahlber.redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Srivatsa S. Bhat <srivatsa@csail.mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Steve French 2017-10-25 15:58:31 -05:00 • committed by Greg Kroah-Hartman
parent 34e924e599
commit 0a53587ac6
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
fs/cifs/smb2pdu.c
View file

@ -1558,6 +1558,9 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
} else
iov[0].iov_len = get_rfc1002_length(req) + 4;
/* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */
if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO)
req->hdr.Flags |= SMB2_FLAGS_SIGNED;
rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buftype, 0);
rsp = (struct smb2_ioctl_rsp *)iov[0].iov_base;