Description
Qt 6 through 6.6 was discovered to contain a NULL pointer dereference via the function QXcbConnection::initializeAllAtoms(). NOTE: this is disputed because it is not expected that an X application should continue to run when there is arbitrary anomalous behavior from the X server.
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 +2 | No fix yet | — |
| Debian 13 | qt6-base +2 | No fix yet | — |
| Debian 12 | qt6-base +2 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | libqt5-qtbase | 5.15.12+kde151-150600.3.6.1 | SUSE-SU-2024:2882-1 |
| SLES 15 SP5 | libqt5-qtbase | 5.15.8+kde185-150500.4.22.1 | SUSE-SU-2024:2883-1 |
| SLES 15 SP5 | qt6-base | 6.4.2-150500.3.20.2 | SUSE-SU-2024:2873-1 |
| SLES 15 SP4 | libqt5-qtbase | 5.15.2+kde294-150400.6.15.1 | SUSE-SU-2024:2890-1 |
| SLES 15 SP3 | libqt5-qtbase | 5.12.7-150200.4.29.1 | SUSE-SU-2024:2946-1 |
| SLES 15 SP2 | libqt5-qtbase | 5.12.7-150200.4.29.1 | SUSE-SU-2024:2946-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | libqt5-qtbase | 5.15.2+kde294-150400.6.15.1 | SUSE-SU-2024:2890-1 |
| SLES for SAP 15 SP3 | libqt5-qtbase | 5.12.7-150200.4.29.1 | SUSE-SU-2024:2946-1 |
| SLES for SAP 15 SP2 | libqt5-qtbase | 5.12.7-150200.4.29.1 | SUSE-SU-2024:2946-1 |
| SLE HPC 15 SP4 | libqt5-qtbase | 5.15.2+kde294-150400.6.15.1 | SUSE-SU-2024:2890-1 |
| SLE HPC 15 SP3 | libqt5-qtbase | 5.12.7-150200.4.29.1 | SUSE-SU-2024:2946-1 |
| SLE HPC 15 SP2 | libqt5-qtbase | 5.12.7-150200.4.29.1 | SUSE-SU-2024:2946-1 |
| SUSE Manager Server 4.3 | libqt5-qtbase | 5.15.2+kde294-150400.6.15.1 | SUSE-SU-2024:2890-1 |
| SUSE Manager Proxy 4.3 | libqt5-qtbase | 5.15.2+kde294-150400.6.15.1 | SUSE-SU-2024:2890-1 |
| SUSE Enterprise Storage 7.1 | libqt5-qtbase | 5.12.7-150200.4.29.1 | SUSE-SU-2024:2946-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | libqt5-qtbase | 5.15.12+kde151-150600.3.6.1 | SUSE-SU-2024:2882-1 |
| openSUSE Leap 15.5 | libqt5-qtbase | 5.15.8+kde185-150500.4.22.1 | SUSE-SU-2024:2883-1 |
| openSUSE Leap 15.5 | qt6-base | 6.4.2-150500.3.20.2 | SUSE-SU-2024:2873-1 |
| openSUSE Leap 15.5 | qt6-base-docs | 6.4.2-150500.3.20.1 | SUSE-SU-2024:2873-1 |
Advisories 6
- SUSE-SU-2024:2890-1 Security update for libqt5-qtbase SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2946-1 Security update for libqt5-qtbase SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2882-1 Security update for libqt5-qtbase SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2883-1 Security update for libqt5-qtbase SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2873-1 Security update for qt6-base SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0231 QT: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 18, 2024