A containerd security update has been released for Debian GNU/Linux 11 to address an information disclosure issue.

DSA 5091-1: containerd security update

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Debian Security Advisory DSA-5091-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
March 06, 2022   https://www.debian.org/security/faq
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Package : containerd
CVE ID : CVE-2022-23648

Felix Wilhelm discovered that the containerd container runtime was
susceptible to information disclosure via malformed container images.

For the stable distribution (bullseye), this problem has been fixed in
version 1.4.13~ds1-1~deb11u1.

We recommend that you upgrade your containerd packages.

For the detailed security status of containerd please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/containerd

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/