A mariadb-10.1 security update has been released for Debian GNU/Linux 9 LTS to address a remote code execution issue.

DLA 2605-1: mariadb-10.1 security update

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Debian LTS Advisory DLA-2605-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Anton Gladky
March 22, 2021   https://wiki.debian.org/LTS
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Package : mariadb-10.1
Version : 10.1.48-0+deb9u2
CVE ID : CVE-2021-27928

A remote code execution issue was discovered in MariaDB. An untrusted search
path leads to eval injection, in which a database SUPER user can execute OS
commands after modifying wsrep_provider and wsrep_notify_cmd.

For Debian 9 stretch, this problem has been fixed in version
10.1.48-0+deb9u2.

We recommend that you upgrade your mariadb-10.1 packages.

For the detailed security status of mariadb-10.1 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/mariadb-10.1

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