[USN-5311-2] containerd regression

========================================================================== Ubuntu Security Notice USN-5311-2 May 16, 2022
containerd regression ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 20.04 LTS
USN-5311-1 fix was reverted by mistake in containerd.
Software Description: – containerd: daemon to control runC
USN-5311-1 released updates for contained. Unfortunately, a subsequent update reverted the fix for this CVE by mistake. This update corrects the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that containerd allows attackers to gain access to read- only copies of arbitrary files and directories on the host via a specially- crafted image configuration. An attacker could possibly use this issue to obtain sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: containerd 1.5.9-0ubuntu1~21.10.3
Ubuntu 20.04 LTS: containerd 1.5.9-0ubuntu1~20.04.4
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5311-2 ubuntu.com/security/notices/USN-5311-1 CVE-2022-23648
Package Information: launchpad.net/ubuntu/+source/containerd/1.5.9-0ubuntu1~21.10.3 launchpad.net/ubuntu/+source/containerd/1.5.9-0ubuntu1~20.04.4