[Bug 2108884] Re: [SRU] On Jammy FIPS GPG prints "out of core handler ignored in FIPS mode" message on every execution

[Bryan Fraschetti]

** Information type changed from Private to Public

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Title:
  [SRU] On Jammy FIPS GPG prints "out of core handler ignored in FIPS
  mode" message on every execution

Status in libgcrypt20 package in Ubuntu:
  New

Bug description:
  [ Impact ]

   * On Jammy FIPS, gpg prints a warning "out of core handler ignored in
  FIPS mode" on every single command. Listing keys, exporting keys,
  running the help command, and even tabbing to autocomplete commands
  produces this warning.

   * It's not necessarily a functional issue, as everything works as
  intended, but it creates confusion for users/sysadmins who are using
  gpg commands and are not aware of the internal memory handling within
  gpg and it's dependencies. The intended target audience of this
  warning message is developers that are using libgcrypt. The message
  comes from libgcrypt20 and cannot be silenced through configuration

   * Based on the upstream at https://dev.gnupg.org/T6515, the
  maintainers decided to resolve this directly in libgcrypt in commit
  https://dev.gnupg.org/rC6c79dcddd151b6b01a760f7aab54e6882ea5a475,
  which removed the print line.

   * As there is no impact in non-FIPS environments, the patch could be
  carried forward as a FIPS-only delta

  [ Test Plan ]

   * Create a fresh Jammy VM

   * Enable FIPS-updates:
   * pro attach <token>
   * pro enable fips-updates
   * reboot
   * run any gpg command and see the message

   * With the proposed patch, gpg commands won't output the message

  [ Where problems could occur ]

   * Removing the warning could decrease the visibility/awareness that
  _gcry_set_outofcore_handler does not set a memory handler in FIPS mode

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