Integer overflow in X.org Server and Xwayland - CVE-2025-62231

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Main Vulnerability Database Vulnerabilities #VU117712

Integer overflow in X.org Server and Xwayland - CVE-2025-62231

Published: October 28, 2025


Vulnerability identifier: #VU117712
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-62231
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow within the Xkb extension XkbSetCompatMap(). A local user can trigger an integer overflow and execute arbitrary code on the target system.


Affected software

X.org Server
Xwayland
Debian Linux
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Manager Proxy 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Linux Enterprise Server 15 SP3
SUSE Manager Server 4.3
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
Anolis OS
SUSE Enterprise Storage
OpenBSD
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Development Tools Module
Basesystem Module
openSUSE Leap
Ubuntu
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
tigervnc (Red Hat package)
tigervnc-server-applet
tigervnc-license
tigervnc-icons
tigervnc-server-module
tigervnc-server-minimal
tigervnc-server
tigervnc
tigervnc-doc
tigervnc-selinux
xorg-x11-server-extra
xorg-x11-server
xorg-x11-server-extra-debuginfo
xorg-x11-server-debugsource
xorg-x11-server-debuginfo
xorg-x11-server-wayland-debuginfo
xorg-x11-server-sdk
xorg-x11-server-wayland
xorg-x11-server-source
xorg-x11-server-Xwayland
xorg-x11-server-common
xorg-x11-server-devel
xorg-x11-server-Xvfb
xorg-x11-server-Xorg
xorg-x11-server-Xnest
xorg-x11-server-Xephyr
xorg-x11-server-Xdmx
xorg-x11-server (Red Hat package)
xorg-x11-server-doc
xorg-x11-server-Xwayland (Red Hat package)
xorg-server (Ubuntu package)
xorg-x11-server-Xvfb-debuginfo
xorg-server (Debian package)
xorg-x11-server-Xwayland-doc
xorg-x11-server-Xwayland-devel
xwayland-debuginfo
xwayland-debugsource
xwayland-devel
xwayland
Juniper Junos Space

How to mitigate CVE-2025-62231

Install updates from vendor's website.

X.org Server - update to 21.1.19
Xwayland - update to 24.1.9
tigervnc (Red Hat package) - addressed in versions 1.1.0-25.el6_10.15, 1.8.0-36.el7_9.3, 1.9.0-15.el8_2.15, 1.11.0-8.el8_4.14, 1.11.0-22.el9_0.16, 1.12.0-6.el8_6.15, 1.12.0-14.el9_2.13, 1.12.0-15.el8_8.16, 1.13.1-8.el9_4.8, 1.14.1-9.el9_6, 1.15.0-6.el9_7, 1.15.0-8.el8_10
tigervnc-server-applet - update to 1.8.0-36
tigervnc-license - addressed in versions 1.8.0-36, 1.13.1-6, 1.15.0-8
tigervnc-icons - addressed in versions 1.8.0-36, 1.13.1-6, 1.15.0-8
tigervnc-server-module - addressed in versions 1.8.0-36, 1.13.1-6, 1.15.0-8
tigervnc-server-minimal - addressed in versions 1.8.0-36, 1.13.1-6, 1.15.0-8
tigervnc-server - addressed in versions 1.8.0-36, 1.13.1-6, 1.15.0-8
tigervnc - addressed in versions 1.8.0-36, 1.13.1-6, 1.15.0-8
tigervnc-doc - update to 1.13.1-6
tigervnc-selinux - addressed in versions 1.13.1-6, 1.15.0-8
xorg-x11-server-extra - addressed in versions 1.19.6-10.94.1, 1.20.3-150200.22.5.118.1, 1.20.3-150400.38.63.1, 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-x11-server - addressed in versions 1.19.6-10.94.1, 1.20.3-150200.22.5.118.1, 1.20.3-150400.38.63.1, 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-x11-server-extra-debuginfo - addressed in versions 1.19.6-10.94.1, 1.20.3-150200.22.5.118.1, 1.20.3-150400.38.63.1, 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-x11-server-debugsource - addressed in versions 1.19.6-10.94.1, 1.20.3-150200.22.5.118.1, 1.20.3-150400.38.63.1, 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-x11-server-debuginfo - addressed in versions 1.19.6-10.94.1, 1.20.3-150200.22.5.118.1, 1.20.3-150400.38.63.1, 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-x11-server-wayland-debuginfo - update to 1.20.3-150200.22.5.118.1
xorg-x11-server-sdk - addressed in versions 1.20.3-150200.22.5.118.1, 1.20.3-150400.38.63.1, 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-x11-server-wayland - update to 1.20.3-150200.22.5.118.1
xorg-x11-server-source - addressed in versions 1.20.3-150400.38.63.1, 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1
xorg-x11-server-Xwayland - addressed in versions 1.20.4-33, 23.2.5-5, 23.2.7-5
xorg-x11-server-common - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server-devel - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server-source - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server-Xvfb - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server-Xorg - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server-Xnest - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server-Xephyr - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server-Xdmx - addressed in versions 1.20.4-33, 1.20.11-27.0.1
xorg-x11-server (Red Hat package) - addressed in versions 1.20.4-33.el7_9, 1.20.6-5.el8_2, 1.20.10-3.el8_4, 1.20.11-6.el8_6, 1.20.11-12.el9_0, 1.20.11-17.el8_8, 1.20.11-27.el9_4, 1.20.11-32.el9_7
xorg-x11-server-doc - update to 1.20.11-27.0.1
xorg-x11-server-Xwayland (Red Hat package) - addressed in versions 21.1.3-2.el8_6.5, 21.1.3-4.el9_0, 21.1.3-9.el9_2, 21.1.3-12.el8_8, 21.1.3-19.el8_10, 22.1.9-7.el9_4, 23.2.7-5.el9_7, 24.1.5-5.el10_0, 24.1.5-5.el10_1
xorg-server (Ubuntu package) - addressed in versions 2:21.1.4-2ubuntu1.7~22.04.16, 2:21.1.12-1ubuntu1.5, 2:21.1.16-1ubuntu1.2, 2:21.1.18-1ubuntu1.1, 2:22.1.1-1ubuntu0.20, 2:23.2.6-1ubuntu0.7, 2:24.1.6-1ubuntu0.2, 2:24.1.6-1ubuntu1.1
xorg-x11-server-Xvfb-debuginfo - addressed in versions 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-x11-server-Xvfb - addressed in versions 21.1.4-150500.7.43.1, 21.1.11-150600.5.20.1, 21.1.15-150700.5.11.1
xorg-server (Debian package) - addressed in versions 2:21.1.7-3+deb12u11, 2:21.1.16-1.3+deb13u1
xorg-x11-server - addressed in versions 21.1.20-1.fc41, 21.1.20-1.fc42, 21.1.20-1.fc43
xorg-x11-server-Xwayland-doc - update to 23.2.5-5
xorg-x11-server-Xwayland-devel - update to 23.2.5-5
xwayland-debuginfo - addressed in versions 24.1.1-150600.5.18.1, 24.1.5-150700.3.9.1
xwayland-debugsource - addressed in versions 24.1.1-150600.5.18.1, 24.1.5-150700.3.9.1
xwayland-devel - update to 24.1.1-150600.5.18.1
xwayland - addressed in versions 24.1.1-150600.5.18.1, 24.1.5-150700.3.9.1
xorg-x11-server-Xwayland - addressed in versions 24.1.9-1.fc41, 24.1.9-1.fc42, 24.1.9-1.fc43
Juniper Junos Space - update to 26.1R1 Patch V1

External References

Related Security Bulletins