[Bug 2051151] Please test proposed package

[Łukasz Zemczak]

Hello Mate, or anyone else affected,

Accepted shim-signed into jammy-proposed. The package will build now and
be available at https://launchpad.net/ubuntu/+source/shim-signed/1.51.4
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
jammy to verification-done-jammy. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-jammy. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/2051151

Title:
  Update to shim 15.8

Status in shim package in Ubuntu:
  Fix Released
Status in shim-signed package in Ubuntu:
  Fix Released
Status in shim source package in Focal:
  Confirmed
Status in shim-signed source package in Focal:
  Confirmed
Status in shim source package in Jammy:
  Fix Committed
Status in shim-signed source package in Jammy:
  Fix Committed
Status in shim source package in Mantic:
  Won't Fix
Status in shim-signed source package in Mantic:
  Won't Fix
Status in shim source package in Noble:
  Fix Released
Status in shim-signed source package in Noble:
  Fix Released
Status in shim package in Debian:
  Fix Released

Bug description:
  [Impact]

  shim 15.7 is affected by multiple CVEs, including a critical severity
  one allowing Secure Boot bypass when netbooting.

  [Test Plan]

  Make sure the system is bootable both from disk and network with the
  new shim on each affected series

  [Where problems could occur]

  Boot regressions are always possible when updating such a critical
  component.

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