A new release of the Ubuntu Cloud Images for stable Ubuntu release 20.04 LTS (Focal Fossa) is available at [1]. These new images superseded the existing images [2]. Images are available for download or immediate use on EC2 via publish AMI ids. Users who wish to update their existing installations can do so with:
   'sudo apt-get update && sudo apt-get dist-upgrade && sudo reboot'.

The following packages have been updated. Please see the full changelogs
for a complete listing of changes:
 * git: 1:2.25.1-1ubuntu3.5 => 1:2.25.1-1ubuntu3.6 
 * linux-meta: 5.4.0.128.129 => 5.4.0.131.131 
 * linux-signed: 5.4.0-128.144 => 5.4.0-131.147 
 * zlib: 1:1.2.11.dfsg-2ubuntu1.4 => 1:1.2.11.dfsg-2ubuntu1.5 


The following is a complete changelog for this image.
new: {'linux-headers-5.4.0-131': '5.4.0-131.147', 'linux-headers-5.4.0-131-generic': '5.4.0-131.147', 'linux-modules-5.4.0-131-generic': '5.4.0-131.147'}
removed: {'linux-headers-5.4.0-128-generic': '5.4.0-128.144', 'linux-headers-5.4.0-128': '5.4.0-128.144', 'linux-modules-5.4.0-128-generic': '5.4.0-128.144'}
changed: ['git', 'git-man', 'linux-headers-generic', 'linux-headers-virtual', 'linux-image-5.4.0-131-generic', 'linux-image-virtual', 'linux-virtual', 'zlib1g:amd64']
new snaps: {}
removed snaps: {}
changed snaps: []
==== git: 1:2.25.1-1ubuntu3.5 => 1:2.25.1-1ubuntu3.6 ====
====     git git-man
  * SECURITY UPDATE: Unexpected behavior
    - debian/patches/CVE-2022-39253-*.patch: disallow --local
      clones with symlinks and additionally changed the
      protocol.file.allow to be user by default in
      builtin/clone.c, transport.c, and modified tests in
      t/t5604-clone-reference.sh,
      lib-submodule-update.sh, t/t1091-sparse-checkout-builtin.sh,
      t/t1500-rev-parse.sh, t/t2400-worktree-add.sh,
      t/t2403-worktree-move.sh, t/t2405-worktree-submodule.sh,
      t/t3200-branch.sh, t/t3420-rebase-autostash.sh,
      t/t3426-rebase-submodule.sh, t/t3512-cherry-pick-submodule.sh,
      t/t3600-rm.sh, t/t3906-stash-submodule.sh,
      t/t4059-diff-submodule-not-initialized.sh,
      t/t4060-diff-submodule-option-diff-format.sh,
      t/t4067-diff-partial-clone.sh,
      t/t4208-log-magic-pathspec.sh, t/t5510-fetch.sh,
      t/t5526-fetch-submodules.sh, t/t5545-push-options.sh,
      t/t5572-pull-submodule.sh, t/t5601-clone.sh,
      t/t5614-clone-submodules-shallow.sh, t/t5616-partial-clone.sh,
      t/t5617-clone-submodules-remote.sh, t/t6008-rev-list-submodule.sh,
      t/t6134-pathspec-in-submodule.sh,
      t/t7001-mv.sh, t/t7064-wtstatus-pv2.sh,
      t/t7300-clean.sh, t/t7400-submodule-basic.sh,
      t/t7403-submodule-sync.sh, t/t7406-submodule-update.sh,
      t/t7407-submodule-foreach.sh, t/t7408-submodule-reference.sh,
      t/t7409-submodule-detached-work-tree.sh, t/t7411-submodule-config.sh,
      t/t7413-submodule-is-active.sh, t/t7414-submodule-mistakes.sh,
      t/t7415-submodule-names.sh, t/t7416-submodule-dash-url.sh,
      t/t7417-submodule-path-url.sh, t/t7418-submodule-sparse-gitmodules.sh,
      t/t7419-submodule-set-branch.sh, t/t7420-submodule-set-url.sh,
      t/t7421-submodule-summary-add.sh, t/t7506-status-submodule.sh,
      t/t7507-commit-verbose.sh, t/t7800-difftool.sh,
      t/t7814-grep-recurse-submodules.sh, t/t9304-fast-import-marks.sh,
      t/t9350-fast-export.sh, t/t1092-sparse-checkout-compatibility.sh,
      t/t2080-parallel-checkout-basics.sh, t/t7450-bad-git-dotfiles.sh.
    - CVE-2022-39253
  * SECURITY UPDATE: Arbitrary heap writes
    - debian/patches/CVE-2022-39260-*.patch: limit size of interactive
      commands and reject too-long cmdline strings in split cmdline()
      in shell.c, t/t9850-shell.sh, alias.c.
    - CVE-2022-39260
==== linux-meta: 5.4.0.128.129 => 5.4.0.131.131 ====
====     linux-headers-generic linux-headers-virtual linux-image-virtual linux-virtual
  * Bump ABI 5.4.0-131
  * Bump ABI 5.4.0-130
==== linux-signed: 5.4.0-128.144 => 5.4.0-131.147 ====
====     linux-image-5.4.0-131-generic
  * Master version: 5.4.0-131.147
  * Master version: 5.4.0-130.146
==== zlib: 1:1.2.11.dfsg-2ubuntu1.4 => 1:1.2.11.dfsg-2ubuntu1.5 ====
====     zlib1g:amd64
  * SECURITY UPDATE: heap-based buffer over-read (LP: #1988548)
    - debian/patches/CVE-2022-37434-1.patch: in inflate.c, add an extra
      condition to check if state->head->extra_max is greater than len
      before copying, and move the len assignment to be placed before the
      check.
    - debian/patches/CVE-2022-37434-2.patch: in the previous patch, in
      inflate.c, the place of the len assignment was causing issues so it
      was moved to be placed within the check.
    - CVE-2022-37434

--
[1] http://cloud-images.ubuntu.com/releases/focal/release-20221018/
[2] http://cloud-images.ubuntu.com/releases/focal/release-20221014/