USN-8357-1: Qt Declarative vulnerability

Publication date

1 June 2026

Overview

Qt Declarative could be made to use excessive resources if it received specially crafted input.


Packages

Details

It was discovered that Qt Declarative did not properly validate the
width and height attributes of image tags in the Text component of Qt
Quick. An attacker could possibly use this issue to cause Qt Declarative
to use excessive resources, leading to a denial of service.

It was discovered that Qt Declarative did not properly validate the
width and height attributes of image tags in the Text component of Qt
Quick. An attacker could possibly use this issue to cause Qt Declarative
to use excessive resources, leading to a denial of service.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
24.04 LTS noble libqt5quick5 –  5.15.13+dfsg-1ubuntu0.1+esm1  
22.04 LTS jammy libqt5quick5 –  5.15.3+dfsg-1ubuntu0.1~esm1  
20.04 LTS focal libqt5quick5 –  5.12.8-0ubuntu1+esm1  

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