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[Bug 1713884] Re: [CIFS] Fix maximum SMB2 header size

 

** Also affects: linux (Ubuntu Vivid)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Vivid)
       Status: New => In Progress

** Changed in: linux (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Vivid)
     Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

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https://bugs.launchpad.net/bugs/1713884

Title:
  [CIFS] Fix maximum SMB2 header size

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Currently the maximum size of SMB2/3 header is set incorrectly which
  leads to hanging of directory listing operations on encrypted SMB3
  connections. Fix this by setting the maximum size to 170 bytes that
  is calculated as RFC1002 length field size (4) + transform header
  size (52) + SMB2 header size (64) + create response size (56).

  https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
  next.git/commit/?id=47690ab81f4f29b12bbb0676d3579e61ab4d84de

  This applies across the board 3.16, 4.4, 4.10, artful, and azure.
  Microsoft would be happy to help test.

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