Description
In Qt for MCUs, a Text element that displays styled text halts the device if an <img> tag in the text contains an attribute with an empty value. The text parser passes the empty value to an internal check that only accepts non-empty values. The check fails and reports an error, and the default error handler halts the device.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| qt | Qt for MCUs | 2.12.0 – < 2.12.3 | 2.12.3 |
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | qt5 +3 | 5.15.18-3.hum1 | RHSA-2026:41387 |
| Red Hat Hardened Images 1 | qt6 +3 | 6.11.2-1.hum1 | RHSA-2026:57634 |
Advisories 3
- WID-SEC-2026-3653 QT für MCUs: Mehrere Schwachstellen ermöglichen DoS und Manipulation von Daten BSI CERT-Bund (WID) · Oct 22, 2026
- RHSA-2026:57634 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:41387 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
References
- dev patch issue-tracking