A libgetdata security update has been released for Debian GNU/Linux 9 LTS to address a heap memory corruption problem.

DLA 2660-1: libgetdata security update

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Debian LTS Advisory DLA-2660-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Anton Gladky
May 13, 2021   https://wiki.debian.org/LTS
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Package : libgetdata
Version : 0.9.4-1+deb9u1
CVE ID : CVE-2021-20204

One security issue has been discovered in libgetdata

CVE-2021-20204

A heap memory corruption problem (use after free) can be triggered when processing
maliciously crafted dirfile databases. This degrades the confidentiality,
integrity and availability of third-party software that uses libgetdata as a library.

For Debian 9 stretch, this problem has been fixed in version
0.9.4-1+deb9u1.

We recommend that you upgrade your libgetdata packages.

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

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