A snapd security update security update has been released for Debian GNU/Linux 11 to address a race condition in the snapd-confine binary which could result in local privilege escalation.

DSA 5292-1: snapd security update

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Debian Security Advisory DSA-5292-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
December 01, 2022   https://www.debian.org/security/faq
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Package : snapd
CVE ID : CVE-2022-3328

The Qualys Research Team discovered a race condition in the snapd-confine
binary which could result in local privilege escalation.

For the stable distribution (bullseye), this problem has been fixed in
version 2.49-1+deb11u2.

We recommend that you upgrade your snapd packages.

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

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/