A QtSvg security update has been released for Ubuntu Linux 18.04 LTS.

==========================================================================
Ubuntu Security Notice USN-5241-1
January 19, 2022

qtsvg-opensource-src vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in QtSvg.

Software Description:
- qtsvg-opensource-src: Qt 5 SVG module

Details:

It was discovered that QtSvg incorrectly handled certain malformed SVG
images. If a user or automated system were tricked into opening a specially
crafted image file, a remote attacker could use this issue to cause QtSvg
to crash, resulting in a denial of service, or possibly execute arbitrary
code.

Update instructions:

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

Ubuntu 18.04 LTS:
libqt5svg5 5.9.5-0ubuntu1.1

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

References:
  https://ubuntu.com/security/notices/USN-5241-1
CVE-2018-19869, CVE-2021-3481, CVE-2021-45930

Package Information:
  https://launchpad.net/ubuntu/+source/qtsvg-opensource-src/5.9.5-0ubuntu1.1