=========================================================================Ubuntu Security Notice USN-4501-1
September 15, 2020

luajit vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

LuaJIT could be made crash or expose sensitive information if it received
specially crafted input.

Software Description:
- luajit: Just in time compiler for Lua programming language version 5.1

Details:

It was discovered that an out-of-bounds read existed in LuaJIT. An
attacker could use this to cause a denial of service (application crash)
or possibly expose sensitive information. (CVE-2020-15890)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
  libluajit-5.1-2                 2.0.4+dfsg-1+deb9u1build0.16.04.1
  libluajit-5.1-common            2.0.4+dfsg-1+deb9u1build0.16.04.1
  libluajit-5.1-dev               2.0.4+dfsg-1+deb9u1build0.16.04.1
  luajit                          2.0.4+dfsg-1+deb9u1build0.16.04.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-4501-1
  CVE-2020-15890

Package Information:

https://launchpad.net/ubuntu/+source/luajit/2.0.4+dfsg-1+deb9u1build0.16.04.1