Description
A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. This issue does not affect systems where client and server use the same byte order.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | xorg-x11-server | xorg-x11-server-1.20.4 | — |
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 | xorg-server | 2:21.1.5-1 | — |
| Debian 14 | xwayland | 2:22.1.6-1 | — |
| Debian 13 | xorg-server | 2:21.1.5-1 | — |
| Debian 13 | xwayland | 2:22.1.6-1 | — |
| Debian 12 | xorg-server | 2:21.1.5-1 | — |
| Debian 12 | xwayland | 2:22.1.6-1 | — |
| Debian 11 | xorg-server | 2:1.20.11-1+deb11u4 | DSA-5304-1 |
| Debian 10 | xorg-server | 2:1.20.4-1+deb10u7 | DLA-3256-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | xorg-server | 2:21.1.3-2ubuntu2.5 | USN-5778-1 |
| Ubuntu 22.04 LTS | xwayland | 2:22.1.1-1ubuntu0.4 | USN-5778-1 |
| Ubuntu 20.04 LTS | xorg-server | 2:1.20.13-1ubuntu1~20.04.5 | USN-5778-1 |
| Ubuntu 18.04 LTS | xorg-server | 2:1.19.6-1ubuntu4.13 | USN-5778-1 |
| Ubuntu 18.04 LTS | xorg-server-hwe-18.04 | 2:1.20.8-2ubuntu2.2~18.04.9 | USN-5778-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | xorg-server | 2:1.18.4-0ubuntu0.12+esm5 | USN-5778-2 |
| Ubuntu Pro 16.04 LTS | xorg-server-hwe-16.04 | 2:1.19.6-1ubuntu4.1~16.04.6+esm4 | USN-5778-2 |
| Ubuntu Pro 14.04 LTS | xorg-server | 2:1.15.1-0ubuntu2.11+esm7 | USN-5778-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | tigervnc +6 | 1.12.0-13.el9_2 | RHSA-2023:2257 |
| RHEL 9 | xorg-x11-server +8 | 1.20.11-17.el9 | RHSA-2023:2248 |
| RHEL 9 | xorg-x11-server-Xwayland | 21.1.3-7.el9 | RHSA-2023:2249 |
| RHEL 8 | tigervnc +6 | 1.12.0-15.el8_8 | RHSA-2023:2830 |
| RHEL 8 | xorg-x11-server +8 | 1.20.11-15.el8 | RHSA-2023:2806 |
| RHEL 8 | xorg-x11-server-Xwayland | 21.1.3-10.el8 | RHSA-2023:2805 |
| RHEL 7 | tigervnc +6 | 1.8.0-23.el7_9 | RHSA-2023:0045 |
| RHEL 7 | xorg-x11-server +9 | 1.20.4-21.el7_9 | RHSA-2023:0046 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 ELS | tigervnc +3 | 1.1.0-25.el6_10.13 | RHSA-2025:12751 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | tigervnc +6 | 1.12.0-13.el9_2 | ALSA-2023:2257 |
| AlmaLinux 9 | xorg-x11-server-Xdmx +7 | 1.20.11-17.el9 | ALSA-2023:2248 |
| AlmaLinux 9 | xorg-x11-server-Xwayland | 21.1.3-7.el9 | ALSA-2023:2249 |
| AlmaLinux 8 | tigervnc +6 | 1.12.0-15.el8_8 | ALSA-2023:2830 |
| AlmaLinux 8 | xorg-x11-server-Xdmx +7 | 1.20.11-15.el8 | ALSA-2023:2806 |
| AlmaLinux 8 | xorg-x11-server-Xwayland | 21.1.3-10.el8 | ALSA-2023:2805 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2023:0731-1, SUSE-SU-2023:0683-1, SUSE-SU-2022:4480-1 |
| SLES 15 SP4 | xwayland | 21.1.4-150400.3.6.1 | SUSE-SU-2023:0654-1, SUSE-SU-2022:4487-1 |
| SLES 15 SP3 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2023:0683-1, SUSE-SU-2022:4480-1 |
| SLES 15 SP2 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2023:0683-1, SUSE-SU-2022:4480-1 |
| SLES 15 SP1 | xorg-x11-server | 1.20.3-150100.14.5.33.1 | SUSE-SU-2023:0657-1, SUSE-SU-2022:4481-1 |
| SLES 15 | xorg-x11-server | 1.19.6-150000.8.47.1 | SUSE-SU-2022:4482-1 |
Show 25 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | xorg-x11-server | 1.19.6-10.40.1 | SUSE-SU-2023:0656-1, SUSE-SU-2022:4483-1 |
| SLES 12 SP4 | xorg-x11-server | 1.19.6-4.39.1 | SUSE-SU-2023:0655-1, SUSE-SU-2022:4484-1 |
| SLES 12 SP3 | xorg-x11-server | 7.6_1.18.3-76.57.1 | SUSE-SU-2022:4485-1 |
| SLES 12 SP2 | xorg-x11-server | 7.6_1.18.3-76.57.1 | SUSE-SU-2023:0653-1, SUSE-SU-2022:4485-1 |
| SLES for SAP 15 SP3 | xorg-x11-server | 1.20.3-150200.22.5.69.1 | SUSE-SU-2023:0683-1 |
| SLES for SAP 15 SP2 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2023:0683-1, SUSE-SU-2022:4480-1 |
| SLES for SAP 15 SP1 | xorg-x11-server | 1.20.3-150100.14.5.33.1 | SUSE-SU-2023:0657-1, SUSE-SU-2022:4481-1 |
| SLES for SAP 15 | xorg-x11-server | 1.19.6-150000.8.47.1 | SUSE-SU-2022:4482-1 |
| SLES for SAP 12 SP5 | xorg-x11-server | 1.19.6-10.40.1 | SUSE-SU-2023:0656-1, SUSE-SU-2022:4483-1 |
| SLES for SAP 12 SP4 | xorg-x11-server | 1.19.6-4.39.1 | SUSE-SU-2023:0655-1, SUSE-SU-2022:4484-1 |
| SLE Real Time 15 SP3 | xorg-x11-server | 1.20.3-150200.22.5.69.1 | SUSE-SU-2023:0683-1 |
| SLE HPC 15 SP3 | xorg-x11-server | 1.20.3-150200.22.5.69.1 | SUSE-SU-2023:0683-1 |
| SLE HPC 15 SP2 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2023:0683-1, SUSE-SU-2022:4480-1 |
| SLE HPC 15 SP1 | xorg-x11-server | 1.20.3-150100.14.5.33.1 | SUSE-SU-2023:0657-1, SUSE-SU-2022:4481-1 |
| SLE HPC 15 | xorg-x11-server | 1.19.6-150000.8.47.1 | SUSE-SU-2022:4482-1 |
| SUSE OpenStack Cloud Crowbar 9 | xorg-x11-server | 1.19.6-4.39.1 | SUSE-SU-2023:0655-1, SUSE-SU-2022:4484-1 |
| SUSE OpenStack Cloud 9 | xorg-x11-server | 1.19.6-4.39.1 | SUSE-SU-2023:0655-1, SUSE-SU-2022:4484-1 |
| SUSE Manager Server 4.2 | xorg-x11-server | 1.20.3-150200.22.5.69.1 | SUSE-SU-2023:0683-1 |
| SUSE Manager Server 4.1 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2022:4480-1 |
| SUSE Manager Retail Branch Server 4.1 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2022:4480-1 |
| SUSE Manager Proxy 4.2 | xorg-x11-server | 1.20.3-150200.22.5.69.1 | SUSE-SU-2023:0683-1 |
| SUSE Manager Proxy 4.1 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2022:4480-1 |
| SUSE Enterprise Storage 7.1 | xorg-x11-server | 1.20.3-150200.22.5.69.1 | SUSE-SU-2023:0683-1 |
| SUSE Enterprise Storage 7 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2023:0683-1, SUSE-SU-2022:4480-1 |
| SUSE Enterprise Storage 6 | xorg-x11-server | 1.20.3-150100.14.5.33.1 | SUSE-SU-2022:4481-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xorg-x11-server | 21.1.4-6.1 | openSUSE-SU-2024:12569-1 |
| openSUSE Tumbleweed | xwayland | 22.1.5-2.1 | openSUSE-SU-2024:12570-1 |
| openSUSE Leap 15.4 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2023:0731-1, SUSE-SU-2023:0683-1, SUSE-SU-2022:4480-1 |
| openSUSE Leap 15.4 | xwayland | 21.1.4-150400.3.6.1 | SUSE-SU-2023:0654-1, SUSE-SU-2022:4487-1 |
| openSUSE Leap 15.3 | xorg-x11-server | 1.20.3-150200.22.5.63.1 | SUSE-SU-2022:4480-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.24 | xwayland | 22.1.6-r0 | — |
| Alpine v3.23 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.23 | xwayland | 22.1.6-r0 | — |
| Alpine v3.22 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.22 | xwayland | 22.1.6-r0 | — |
| Alpine v3.21 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.21 | xwayland | 22.1.6-r0 | — |
| Alpine v3.20 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.20 | xwayland | 22.1.6-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.19 | xwayland | 22.1.6-r0 | — |
| Alpine v3.18 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.18 | xwayland | 22.1.6-r0 | — |
| Alpine v3.17 | xorg-server | 21.1.5-r0 | — |
| Alpine v3.17 | xwayland | 22.1.6-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | xorg-x11-server-Xdmx +7 | 1.20.14-12.amzn2023.0.2 | ALAS2023-2023-102 |
| Amazon Linux 2 | xorg-x11-server-Xdmx +8 | 1.20.4-22.amzn2 | ALAS2-2023-1982 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | xorg-x11-server | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | tigervnc +6 | 1.12.0-13.el9_2 | ELSA-2023-2257 |
| Oracle Linux 9 | xorg-x11-server-Xdmx +7 | 1.20.11-17.el9 | ELSA-2023-2248 |
| Oracle Linux 9 | xorg-x11-server-Xwayland | 21.1.3-7.el9 | ELSA-2023-2249 |
| Oracle Linux 8 | tigervnc +6 | 1.12.0-15.el8_8 | ELSA-2023-2830 |
| Oracle Linux 8 | xorg-x11-server-Xdmx +7 | 1.20.11-15.el8 | ELSA-2023-2806 |
| Oracle Linux 8 | xorg-x11-server-Xwayland | 21.1.3-10.el8 | ELSA-2023-2805 |
| Oracle Linux 7 | tigervnc +6 | 1.8.0-23.el7_9 | ELSA-2023-0045 |
| Oracle Linux 7 | xorg-x11-server-Xdmx +8 | 1.20.4-21.el7_9 | ELSA-2023-0046 |
Advisories 48
- ALSA-2023:2249 Moderate: xorg-x11-server-Xwayland security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:2257 Moderate: tigervnc security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:2248 Moderate: xorg-x11-server security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:2805 Moderate: xorg-x11-server-Xwayland security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:2806 Moderate: xorg-x11-server security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:2830 Moderate: tigervnc security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2025:12751 Red Hat Security Advisory: tigervnc security update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- USN-5778-2 xorg-server, xorg-server-hwe-16.04 vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2023:2806 Red Hat Security Advisory: xorg-x11-server security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:2805 Red Hat Security Advisory: xorg-x11-server-Xwayland security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:2248 Red Hat Security Advisory: xorg-x11-server security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:2249 Red Hat Security Advisory: xorg-x11-server-Xwayland security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2023:0046 Red Hat Security Advisory: xorg-x11-server security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2023:0045 Red Hat Security Advisory: tigervnc security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5778-1 xorg-server, xorg-server-hwe-18.04, xwayland vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5304-1 xorg-server - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3256-1 xorg-server - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:0655-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12569-1 xorg-x11-server-21.1.4-6.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4480-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4483-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0654-1 Security update for xwayland SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0731-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4485-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0657-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0656-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0683-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4481-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4484-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4482-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0653-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4487-1 Security update for xwayland SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12570-1 xwayland-22.1.5-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2023:2830 Red Hat Security Advisory: tigervnc security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2023:2257 Red Hat Security Advisory: tigervnc security and bug fix update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2023-1424 Xerox FreeFlow Print Server für Solaris: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- WID-SEC-2022-2312 X.Org X11: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Aug 4, 2025
- SUSE-SU-2022:4479-1 Security update for xorg-x11-server SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2023-1982 Important: xorg-x11-server security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 23, 2024
- ELSA-2023-2806 Moderate: xorg-x11-server security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 24, 2023
- ELSA-2023-2830 Moderate: tigervnc security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 24, 2023
- ELSA-2023-2805 Moderate: xorg-x11-server-Xwayland security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 24, 2023
- ELSA-2023-2257 Moderate: tigervnc security and bug fix update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 15, 2023
- ELSA-2023-2249 Moderate: xorg-x11-server-Xwayland security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 15, 2023
- ELSA-2023-2248 Moderate: xorg-x11-server security and bug fix update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 15, 2023
- ALAS2023-2023-102 Important: xorg-x11-server security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 22, 2023
- ELSA-2023-0046 Important: xorg-x11-server security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 9, 2023
- ELSA-2023-0045 Important: tigervnc security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 9, 2023
References
- https://access.redhat.com/security/cve/CVE-2022-46340
- https://bugzilla.redhat.com/show_bug.cgi?id=2151755
- FEDORA-2022-c3a65f7c65 vendor-advisory
- FEDORA-2022-721a78b7e5 vendor-advisory
- DSA-5304 vendor-advisory
- FEDORA-2022-3d88188071 vendor-advisory
- FEDORA-2022-dd3eb7e0a8 vendor-advisory
- https://security.gentoo.org/glsa/202305-30