Merge tag 'xsa432-6.5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen netback buffer overflow fix from Juergen Gross:
 "The fix for XSA-423 added logic to Linux'es netback driver to deal
  with a frontend splitting a packet in a way such that not all of the
  headers would come in one piece.

  Unfortunately the logic introduced there didn't account for the
  extreme case of the entire packet being split into as many pieces as
  permitted by the protocol, yet still being smaller than the area
  that's specially dealt with to keep all (possible) headers together.

  Such an unusual packet would therefore trigger a buffer overrun in the
  driver"

* tag 'xsa432-6.5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/netback: Fix buffer overrun triggered by unusual packet

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