A luajit security update has been released for Debian GNU/Linux 9 LTS to address an out-of-bounds read issue.

DLA 2296-1: luajit security update

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Debian LTS Advisory DLA-2296-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
July 28, 2020   https://wiki.debian.org/LTS
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Package : luajit
Version : 2.0.4+dfsg-1+deb9u1
CVE ID : CVE-2020-15890

An issue has been found in luajit, a just in time compiler for Lua.

An out-of-bounds read could happen because __gc handler frame traversal is
mishandled.

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

We recommend that you upgrade your luajit packages.

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

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