A kicad security update has been released for Debian GNU/Linux 9 LTS to address several buffer-overflows.

DLA 2998-1: kicad security update

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Debian LTS Advisory DLA-2998-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Stefano Rivera
May 09, 2022   https://wiki.debian.org/LTS
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Package : kicad
Version : 4.0.5+dfsg1-4+deb9u1
CVE ID : CVE-2022-23803 CVE-2022-23804 CVE-2022-23946 CVE-2022-23947

KiCad is a suite of programs for the creation of printed circuit boards.
It includes a schematic editor, a PCB layout tool, support tools and a 3D
viewer to display a finished & fully populated PCB.

Several buffer-overflows were discovered in the Gerber Viewer and excellon
file parser, that could lead to code execution when opening a
maliciously-crafted file.

CVE-2022-23803

A stack-based buffer overflow vulnerability exists in the Gerber Viewer
gerber and excellon ReadXYCoord coordinate parsing functionality of KiCad
EDA.

CVE-2022-23804

A stack-based buffer overflow vulnerability exists in the Gerber Viewer
gerber and excellon ReadIJCoord coordinate parsing functionality of KiCad
EDA.

CVE-2022-23946

A stack-based buffer overflow vulnerability exists in the Gerber Viewer
gerber and excellon GCodeNumber parsing functionality of KiCad EDA.

CVE-2022-23947

A stack-based buffer overflow vulnerability exists in the Gerber Viewer
gerber and excellon DCodeNumber parsing functionality of KiCad EDA.

For Debian 9 stretch, these problems have been fixed in version
4.0.5+dfsg1-4+deb9u1.

We recommend that you upgrade your kicad packages.

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

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