Description
When passing values outside of the expected range to QColorTransferGenericFunction it can cause a denial of service, for example, this can happen when passing a specifically crafted ICC profile to QColorSpace::fromICCProfile.
This issue affects Qt from 6.6.0 through 6.8.3, from 6.9.0 through 6.9.1. This is fixed in 6.8.4 and 6.9.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Qt | Qt | 6.6.0 – ≤ 6.8.3, 6.9.0 – ≤ 6.9.1 | 6.8.4 |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qt6-base | 6.8.2+dfsg-9 | — |
| Debian 13 | qt6-base | 6.8.2+dfsg-9 | — |
| Debian 12 | qt6-base | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | qt6-base | No fix yet | — |
| Ubuntu 26.04 LTS | qt6-base | No fix yet | — |
| Ubuntu 25.10 | qt6-base | No fix yet | — |
| Ubuntu 24.04 LTS | qt6-base | No fix yet | — |
| Ubuntu 22.04 LTS | qt6-base | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qt6-base | 6.9.1-2.1 | openSUSE-SU-2025:15345-1 |
Advisories 2
- openSUSE-SU-2025:15345-1 libQt6Concurrent6-6.9.1-2.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2025-1531 QT: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jul 16, 2025