A Emacs security update has been released for Ubuntu Linux 16.04 ESM.

USN-5781-1: Emacs vulnerability

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Ubuntu Security Notice USN-5781-1
December 14, 2022

emacs24 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM

Summary:

Emacs could be made to run programs as your login if it received
specially crafted input.

Software Description:
- emacs24: GNU Emacs editor

Details:

It was discovered that Emacs did not properly manage certain inputs.
An attacker could possibly use this issue to execute arbitrary commands.

Update instructions:

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

Ubuntu 16.04 ESM:
emacs24 24.5+1-6ubuntu1.1+esm1
emacs24-bin-common 24.5+1-6ubuntu1.1+esm1

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

References:
https://ubuntu.com/security/notices/USN-5781-1
CVE-2022-45939