[Bug 1996950] Re: CVE-2022-2601, CVE-2022-3775: font security fixes

[Launchpad Bug Tracker]

This bug was fixed in the package grub2-signed - 1.173.4

---------------
grub2-signed (1.173.4) focal; urgency=medium

  * Source debconf in postinst script (LP: #1997779)
  * Enforce build against 2.04-1ubuntu47.5

grub2-signed (1.173.3) focal; urgency=medium

  * Rebuild against grub2 2.04-1ubuntu47.5 (LP: #1996950)
  * Bump grub2-common dependency to 2.02~beta2-36ubuntu3.33 in xenial and
    2.02-2ubuntu8.25 in bionic to fix LP: #1995751

 -- Julian Andres Klode <juliank at ubuntu.com>  Fri, 02 Dec 2022 15:15:54
+0100

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https://bugs.launchpad.net/bugs/1996950

Title:
  CVE-2022-2601, CVE-2022-3775: font security fixes

Status in grub2-signed package in Ubuntu:
  Fix Released
Status in grub2-unsigned package in Ubuntu:
  Fix Released
Status in grub2-signed source package in Bionic:
  New
Status in grub2-unsigned source package in Bionic:
  New
Status in grub2-signed source package in Focal:
  Fix Released
Status in grub2-unsigned source package in Focal:
  Fix Released
Status in grub2-signed source package in Jammy:
  New
Status in grub2-unsigned source package in Jammy:
  New
Status in grub2-signed source package in Kinetic:
  New
Status in grub2-unsigned source package in Kinetic:
  New
Status in grub2-signed source package in Lunar:
  Fix Released
Status in grub2-unsigned source package in Lunar:
  Fix Released

Bug description:
  [Impact]
  security update staged in updates

  [Test plan]
  Boot it on multiple systems. Notably juliank will be doing semi-automated testing in QEMU that does chainbooting over network (shim->grub->shim->grub); and boots on T14 G3 AMD and an XPS 13; chrisccoulson did his own security testing before that.

  [Where problems could occur]
  Font loading is disabled, could cause rendering issues

  Unicode font stuffed in xz squashfs, could cause more memory issues
  during boot

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