A postgresql-13 security update has been released for Debian GNU/Linux 11 to address an issue where the autovacuum feature and multiple commands could escape the "security-restricted operation" sandbox.

DSA 5136-1: postgresql-13 security update

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Debian Security Advisory DSA-5136-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
May 12, 2022   https://www.debian.org/security/faq
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Package : postgresql-13
CVE ID : CVE-2022-1552

Alexander Lakhin discovered that the autovacuum feature and multiple
commands could escape the "security-restricted operation" sandbox.

For additional information please refer to the upstream announcement
at   https://www.postgresql.org/support/security/CVE-2022-1552/

For the stable distribution (bullseye), this problem has been fixed in
version 13.7-0+deb11u1.

We recommend that you upgrade your postgresql-13 packages.

For the detailed security status of postgresql-13 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/postgresql-13

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/