A new release of the Ubuntu Cloud Images for stable Ubuntu release 20.10 (Groovy Gorilla) 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 These new images superseded the existing images [2].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:
 * alsa-lib: 1.2.3.2-1ubuntu3.1 => 1.2.3.2-1ubuntu3.2 
 * apport: 2.20.11-0ubuntu50.5 => 2.20.11-0ubuntu50.6 
 * libxmlb: 0.1.15-2 => 0.1.15-2ubuntu1~20.10.1 
 * linux-meta: 5.8.0.50.55 => 5.8.0.53.58 
 * linux-signed: 5.8.0-50.56 => 5.8.0-53.60 
 * open-iscsi: 2.1.1-1ubuntu2 => 2.1.1-1ubuntu2.1 
 * pyyaml: 5.3.1-2 => 5.3.1-2ubuntu0.1 
 * update-manager: 1:20.10.5 => 1:20.10.6 


The following is a complete changelog for this image.
new: {'linux-headers-5.8.0-53-generic': '5.8.0-53.60', 'linux-headers-5.8.0-53': '5.8.0-53.60', 'linux-modules-5.8.0-53-generic': '5.8.0-53.60'}
removed: {'linux-headers-5.8.0-50-generic': '5.8.0-50.56', 'linux-modules-5.8.0-50-generic': '5.8.0-50.56', 'linux-headers-5.8.0-50': '5.8.0-50.56'}
changed: ['apport', 'libasound2-data', 'libasound2:amd64', 'libopeniscsiusr0.2.0', 'libxmlb1:amd64', 'linux-headers-generic', 'linux-headers-virtual', 'linux-image-5.8.0-53-generic', 'linux-image-virtual', 'linux-virtual', 'open-iscsi', 'python3-apport', 'python3-problem-report', 'python3-update-manager', 'python3-yaml', 'update-manager-core']
new snaps: {}
removed snaps: {}
changed snaps: ['lxd']
==== alsa-lib: 1.2.3.2-1ubuntu3.1 => 1.2.3.2-1ubuntu3.2 ====
====     libasound2-data libasound2:amd64
  * d/p/0001-conf-USB-add-Cmedia-Audio-to-USB-Audio.pcm.iec958_de.patch:
     conf: USB - add "Cmedia Audio" to USB-Audio.pcm.iec958_device
     (LP: #1921452)
 
==== apport: 2.20.11-0ubuntu50.5 => 2.20.11-0ubuntu50.6 ====
====     apport python3-apport python3-problem-report
  * data/general-hooks/ubuntu.py: tag bugs from Raspberry Pi images and RISCV
    images appropriately. (LP: #1920837)
  * apport/hookutils.py: spawn pkttyagent so that log files can be gathered as
    root in a non-graphical environment (LP: #1821415). Thanks to Iain Lane
    for the patch.
  * apport/hookutils.py: root access is needed to read the
    casper-md5check.json file so switch to using that. (LP: #1922937)
==== libxmlb: 0.1.15-2 => 0.1.15-2ubuntu1~20.10.1 ====
====     libxmlb1:amd64
  * No-change backport from hirsute to groovy
  * d/p/xb-silo-Cancel-the-GFileMonitor-before-unreffing-it.patch:
    Cherry-pick upstream patch to fix a deadlock. Forwarded to Debian at
    https://salsa.debian.org/efi-team/libxmlb/-/merge_requests (LP: #1890313)
==== linux-meta: 5.8.0.50.55 => 5.8.0.53.58 ====
====     linux-headers-generic linux-headers-virtual linux-image-virtual linux-virtual
  * Bump ABI 5.8.0-53
  * Packaging resync (LP: #1786013)
    - [Packaging] resync debian/dkms-versions from main package
  * Bump ABI 5.8.0-52
  * Bump ABI 5.8.0-51
==== linux-signed: 5.8.0-50.56 => 5.8.0-53.60 ====
====     linux-image-5.8.0-53-generic
  * Master version: 5.8.0-53.60
  * Master version: 5.8.0-52.59
  * Master version: 5.8.0-52.58
  * Master version: 5.8.0-51.57
==== open-iscsi: 2.1.1-1ubuntu2 => 2.1.1-1ubuntu2.1 ====
====     libopeniscsiusr0.2.0 open-iscsi
  * d/open-iscsi.finalrd: fix UID resolution issues in logout (LP: #1922976)
    Thanks to Michael Brown
==== pyyaml: 5.3.1-2 => 5.3.1-2ubuntu0.1 ====
====     python3-yaml
  * SECURITY UPDATE: FullLoader arbitrary code execution
    - debian/patches/CVE-2020-14343.patch: move a few constructors from
      full_load to unsafe_load in lib/yaml/constructor.py,
      lib3/yaml/constructor.py, tests/lib/test_recursive.py,
      tests/lib3/test_recursive.py.
    - CVE-2020-14343
==== update-manager: 1:20.10.5 => 1:20.10.6 ====
====     python3-update-manager update-manager-core
  * tests/test_update_list.py: rewrite how APT::VersionedKernelPackages is set.
    (LP: #1924809)
  * debian/tests/control: add apt to the list of Depends.

--
[1] http://cloud-images.ubuntu.com/releases/groovy/release-20210511.1/
[2] http://cloud-images.ubuntu.com/releases/groovy/release-20210504/