Description
An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x before 6.6.2. network/access/http2/hpacktable.cpp has an incorrect HPack integer overflow check.
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 | 6.4.2+dfsg-21 | — |
| Debian 14 | qtbase-opensource-src | 5.15.10+dfsg-6 | — |
| Debian 14 | qtbase-opensource-src-gles | 5.15.10+dfsg-4 | — |
| Debian 13 | qt6-base | 6.4.2+dfsg-21 | — |
| Debian 13 | qtbase-opensource-src | 5.15.10+dfsg-6 | — |
| Debian 13 | qtbase-opensource-src-gles | 5.15.10+dfsg-4 | — |
| Debian 12 | qt6-base +1 | No fix yet | — |
| Debian 12 | qtbase-opensource-src | 5.15.8+dfsg-11+deb12u2 | — |
| Debian 10 | qtbase-opensource-src | 5.11.3+dfsg1-1+deb10u6 | DLA-3805-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | qt6-base +1 | No fix yet | — |
| Ubuntu 20.04 LTS | qtbase-opensource-src-gles | No fix yet | — |
| Ubuntu 16.04 LTS | qtbase-opensource-src-gles | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | qtbase-opensource-src | 5.15.3+dfsg-2ubuntu0.2+esm3 | — |
| Ubuntu Pro 20.04 LTS | qtbase-opensource-src | 5.12.8+dfsg-0ubuntu2.1+esm3 | — |
| Ubuntu Pro 18.04 LTS | qtbase-opensource-src | 5.9.5+dfsg-0ubuntu2.6+esm2 | — |
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 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | libqt5-qtbase | 5.15.8+kde185-150500.4.16.1 | SUSE-SU-2024:0138-1 |
| SLES 15 SP5 | qt6-base | 6.4.2-150500.3.14.1 | SUSE-SU-2024:0063-1 |
| 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 Tumbleweed | libqt5-qtbase | 5.15.12+kde147-1.1 | openSUSE-SU-2024:13553-1 |
| openSUSE Tumbleweed | qt6-base | 6.6.1-5.1 | openSUSE-SU-2024:13555-1 |
| openSUSE Leap 15.5 | libqt5-qtbase | 5.15.8+kde185-150500.4.16.1 | SUSE-SU-2024:0138-1 |
| openSUSE Leap 15.5 | qt6-base +1 | 6.4.2-150500.3.14.1 | SUSE-SU-2024:0063-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | qt5-qtbase +10 | 5.9.2-3.amzn2.0.13 | ALAS2-2024-2421 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | qtbase | 6.6.2-1 | — |
| Azure Linux 2 (CBL-Mariner) | qt5-qtbase | 5.12.11-10 | — |
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 16
- 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
- DLA-3805-1 qtbase-opensource-src - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2023-3214 QT: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Mar 5, 2026
- 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-2024:0138-1 Security update for libqt5-qtbase SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:0063-1 Security update for qt6-base SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13553-1 libQt5Bootstrap-devel-static-32bit-5.15.12+kde147-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13555-1 libQt6Concurrent6-6.6.1-5.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2024:3056 Moderate: qt5-qtbase security update Rocky Linux Security Advisories · 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
- ALAS2-2024-2421 Moderate: qt5-qtbase security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 22, 2024