[Bug 1820798] Re: hardening-check: add support for detecting stack clash protected binaries

[Alex Murray]

Will let the foundations team decide on the importance of this but the
security team is keen for this to land in 19.10 / EE to support the
toolchain hardening updates so I hope this is seen as a higher priority
than Wishlist.

** Changed in: devscripts (Ubuntu)
   Importance: Wishlist => Undecided

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Title:
  hardening-check: add support for detecting stack clash protected
  binaries

Status in devscripts package in Ubuntu:
  New

Bug description:
  The security team is in the process of making -fstack-clash-protection
  enabled by default in gcc-8/9 for 19.10 / 20.04. To support this it is
  useful to be able to detect binaries which include this new feature
  via hardening-check. Unlike previous features this can only be
  detected by looking for the sequence of instructions which perform
  this feature in the disassembly output via objdump.

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