Description
An issue was discovered in Qt before 6.2.11 and 6.3.x through 6.6.x before 6.6.1. When a QML image refers to an image whose content is not known yet, there is an assumption that it is an SVG document, leading to a denial of service (application crash) if it is not actually an SVG document.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | qt6-svg | No fix yet | — |
| Ubuntu 26.04 LTS | qt6-svg | No fix yet | — |
| Ubuntu 25.10 | qt6-svg | No fix yet | — |
| Ubuntu 24.04 LTS | qt6-svg | No fix yet | — |
| Ubuntu 22.04 LTS | qt6-svg | No fix yet | — |
Advisories 1
- WID-SEC-2023-2710 QT: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 24, 2025