Public bug reported:

[Impact]
This release fixes several security-related bugs. We would like to make sure 
all of our users have access to these improvements.

The update contains the following package updates:
   * ceph 20.2.4 
https://docs.ceph.com/en/latest/releases/tentacle/#v20-2-4-tentacle

Notable changes:
   * The CVEs 2025-30156, 2026-39944, 2026-50152 and 2026-54330 have been 
fixed. These are all security-critical and impact any clients that make use of 
cephx keys.

[Test Case]

This SRU will run all functional tests with the packages in 'proposed'
for every Ceph charm maintained by Canonical's Ceph team, so that
there's a higher chance of catching bugs associated with any Ceph
component.

The charms for which the functional tests will be run are: ceph-mon,
ceph-osd, ceph-radosgw, ceph-proxy, ceph-nfs, ceph-nvme, ceph-fs and
ceph-rbd-mirror.

The functional test suite includes upgrade testing from the current
stable release to the proposed (in this case, from 20.2.1 to 20.2.4)

[Regression Potential]

ceph is a critical package as it underpins large scale data storage and
integrity checking, and care must be taken to not introduce any data
loss regressions. ceph also is a common backing store for OpenStack
virtual machines through ceph-rbd, and care must be taken to not break
any API or ABI compatibility with current OpenStack releases.

In order to mitigate the regression potential, the results of the
aforementioned tests will be attached to this bug.

** Affects: ceph (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2166817

Title:
  [SRU] ceph 20.2.4

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