A new release of the Ubuntu Cloud Images for stable Ubuntu release 21.10 (Impish Indri) 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 These new images superseded the existing images [2].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:
 * nss: 2:3.68-1ubuntu1.1 => 2:3.68-1ubuntu1.2 


The following is a complete changelog for this image.
new: {}
removed: {}
changed: ['libnss3:amd64']
new snaps: {}
removed snaps: {}
changed snaps: ['snapd']
==== nss: 2:3.68-1ubuntu1.1 => 2:3.68-1ubuntu1.2 ====
====     libnss3:amd64
  * SECURITY UPDATE: Crash when handling empty pkcs7 sequence
    - debian/patches/CVE-2022-22747.patch: check for missing signedData
      field in nss/gtests/certdb_gtest/decode_certs_unittest.cc,
      nss/lib/pkcs7/certread.c.
    - CVE-2022-22747
  * SECURITY UPDATE: Free of uninitialized pointer in lg_init
    - debian/patches/CVE-2022-34480.patch: rearrange frees in
      nss/lib/softoken/legacydb/lginit.c.
    - CVE-2022-34480

--
[1] http://cloud-images.ubuntu.com/releases/impish/release-20220708/
[2] http://cloud-images.ubuntu.com/releases/impish/release-20220706/