A librecad security update has been released for Debian GNU/Linux 9 LTS to address a potential heap buffer overflow.

DLA 3046-1: librecad security update

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Debian LTS Advisory DLA-3046-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Chris Lamb
June 07, 2022   https://wiki.debian.org/LTS
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Package : librecad
Version : 2.1.2-1+deb9u4
CVE ID : CVE-2021-21897
Debian Bug : #1010349

It was discovered that there was a potential heap buffer overflow in
librecad, a popular computer-aided design (CAD) system. A specially
crafted .dxf file could have led to arbitrary code execution.

For Debian 9 "Stretch", this problem has been fixed in version
2.1.2-1+deb9u4.

We recommend that you upgrade your librecad packages.

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

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