Description
An issue was discovered in gui/util/qktxhandler.cpp in Qt before 5.15.17, 6.x before 6.2.12, 6.3.x through 6.5.x before 6.5.5, and 6.6.x before 6.6.2. A buffer overflow and application crash can occur via a crafted KTX image file.
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 | 6.6.2+dfsg-8 | — |
| Debian 14 | qtbase-opensource-src | 5.15.10+dfsg-7 | — |
| Debian 14 | qtbase-opensource-src-gles | 5.15.10+dfsg-5 | — |
| Debian 13 | qt6-base | 6.6.2+dfsg-8 | — |
| Debian 13 | qtbase-opensource-src | 5.15.10+dfsg-7 | — |
| Debian 13 | qtbase-opensource-src-gles | 5.15.10+dfsg-5 | — |
| Debian 12 | qt6-base +1 | No fix yet | — |
| Debian 12 | qtbase-opensource-src | 5.15.8+dfsg-11+deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | qt6-base +1 | No fix yet | — |
| Ubuntu 26.04 LTS | qt6-base +1 | No fix yet | — |
| Ubuntu 25.10 | qt6-base +1 | No fix yet | — |
| Ubuntu 24.04 LTS | qt6-base +1 | No fix yet | — |
| Ubuntu 22.04 LTS | qt6-base +1 | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | qtbase-opensource-src-gles | No fix yet | — |
| Ubuntu 16.04 LTS | qtbase-opensource-src-gles | No fix yet | — |
| Ubuntu Pro 22.04 LTS | qtbase-opensource-src | 5.15.3+dfsg-2ubuntu0.2+esm2 | USN-7923-1 |
| Ubuntu Pro 20.04 LTS | qtbase-opensource-src | 5.12.8+dfsg-0ubuntu2.1+esm2 | USN-7923-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | qt5-qtbase +9 | 5.15.9-9.el9 | RHSA-2024:2276 |
| RHEL 8 | qt5-qtbase +9 | 5.15.3-7.el8 | RHSA-2024:3056 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | qt5-qtbase +9 | 5.15.9-9.el9 | ALSA-2024:2276 |
| AlmaLinux 8 | qt5-qtbase +9 | 5.15.3-7.el8 | ALSA-2024:3056 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | qt5-qtbase | 5.15.3-7.el8 | RLSA-2024:3056 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libqt5-qtbase | 5.15.12+kde151-1.1 | openSUSE-SU-2024:13690-1 |
| openSUSE Tumbleweed | qt6-base | 6.6.2-2.1 | openSUSE-SU-2024:13775-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | qtbase | 6.6.2-1 | — |
| Azure Linux 2 (CBL-Mariner) | qt5-qtbase | 5.12.11-15 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | qt5-qtbase +9 | 5.15.9-9.el9 | ELSA-2024-2276 |
| Oracle Linux 8 | qt5-qtbase +9 | 5.15.3-7.el8 | ELSA-2024-3056 |
Advisories 11
- ALSA-2024:2276 Moderate: qt5-qtbase security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3056 Moderate: qt5-qtbase security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:2276 Red Hat Security Advisory: qt5-qtbase security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2024:3056 Red Hat Security Advisory: qt5-qtbase security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-7923-1 qtbase-opensource-src vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2024:13690-1 libQt5Bootstrap-devel-static-32bit-5.15.12+kde151-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0404 QT: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Dec 10, 2025
- RLSA-2024:3056 Moderate: qt5-qtbase security update Rocky Linux Security Advisories · May 7, 2025
- openSUSE-SU-2024:13775-1 libQt6Concurrent6-6.6.2-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2024-3056 Moderate: qt5-qtbase security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 23, 2024
- ELSA-2024-2276 Moderate: qt5-qtbase security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 2, 2024