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Fencer Intel
high 7.3

CVE-2025-62231 json

Xorg: xmayland: value overflow in xkbsetcompatmap()

published last yr. modified 4d ago also EUVD-2025-36898

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.

Patch / fix

  • X.Org Xwayland 24.1.9
  • Red Hat Red Hat Enterprise Linux 10 0:24.1.5-5.el10_0, 0:24.1.5-5.el10_1
  • Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10.15
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.8.0-36.el7_9.3, 0:1.20.4-33.el7_9
  • Red Hat Red Hat Enterprise Linux 8 0:1.15.0-8.el8_10, 0:1.20.11-27.el8_10, 0:21.1.3-19.el8_10
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:1.9.0-15.el8_2.15, 0:1.20.6-5.el8_2
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.11.0-8.el8_4.14, 0:1.20.10-3.el8_4
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:1.11.0-8.el8_4.14, 0:1.20.10-3.el8_4
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:1.12.0-6.el8_6.15, 0:1.20.11-6.el8_6, 0:21.1.3-2.el8_6.5
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:1.12.0-6.el8_6.15, 0:1.20.11-6.el8_6, 0:21.1.3-2.el8_6.5
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:1.12.0-6.el8_6.15, 0:1.20.11-6.el8_6, 0:21.1.3-2.el8_6.5
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:1.12.0-15.el8_8.16, 0:1.20.11-17.el8_8, 0:21.1.3-12.el8_8
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:1.12.0-15.el8_8.16, 0:1.20.11-17.el8_8, 0:21.1.3-12.el8_8
  • Red Hat Red Hat Enterprise Linux 9 0:1.14.1-9.el9_6, 0:1.15.0-6.el9_7, 0:1.20.11-32.el9_6, 0:1.20.11-32.el9_7, 0:23.2.7-5.el9_6, 0:23.2.7-5.el9_7
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:1.11.0-22.el9_0.16, 0:1.20.11-12.el9_0, 0:21.1.3-4.el9_0
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.12.0-14.el9_2.13, 0:1.20.11-19.el9_2, 0:21.1.3-9.el9_2
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:1.13.1-8.el9_4.8, 0:1.20.11-27.el9_4, 0:22.1.9-7.el9_4
  • xwayland Debian 14 2:24.1.9-1
  • xorg-server Debian 12 2:21.1.7-3+deb12u11
  • xorg-server Debian 13 2:21.1.16-1.3+deb13u1
  • xorg-server Debian 14 2:21.1.20-1

debian advisories DEBIAN-CVE-2025-62231

  • xwayland Ubuntu 22.04 LTS 2:22.1.1-1ubuntu0.20
  • xwayland Ubuntu 24.04 LTS 2:23.2.6-1ubuntu0.7
  • xwayland Ubuntu 25.10 2:24.1.6-1ubuntu1.1
  • xwayland Ubuntu 26.04 LTS 2:24.1.9-1
  • xorg-server Ubuntu 22.04 LTS 2:21.1.4-2ubuntu1.7~22.04.16
  • xorg-server Ubuntu 24.04 LTS 2:21.1.12-1ubuntu1.5
  • xorg-server Ubuntu 25.10 2:21.1.18-1ubuntu1.1
  • xorg-server Ubuntu 26.04 LTS 2:21.1.21-1ubuntu1

ubuntu advisories UBUNTU-CVE-2025-62231

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • xorg-x11-server-Xwayland RHEL 10.1 24.1.5-5.el10_1
  • xorg-x11-server RHEL 9 1.20.11-32.el9_7
  • xorg-x11-server-Xdmx RHEL 9 1.20.11-32.el9_7
  • xorg-x11-server-Xorg RHEL 9 1.20.11-32.el9_7
  • xorg-x11-server-Xvfb RHEL 9 1.20.11-32.el9_7
  • xorg-x11-server-Xnest RHEL 9 1.20.11-32.el9_7
  • xorg-x11-server-common RHEL 9 1.20.11-32.el9_7
  • xorg-x11-server-source RHEL 9 1.20.11-32.el9_7

red hat advisories RHSA-2026:0035RHSA-2026:0031RHSA-2026:0036RHSA-2026:0033RHSA-2026:0034RHSA-2025:22753

  • xwayland SLES for SAP applications 16.0, SLES 16.0 24.1.6-160000.3.1
  • xorg-x11-server SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 1.20.3-150400.38.63.1
  • xwayland SLE Workstation Extension 15 SP7 24.1.5-150700.3.9.1
  • xorg-x11-server SLE Module for Development Tools 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 21.1.11-150600.5.20.1
  • xorg-x11-server SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 21.1.4-150500.7.43.1
  • xorg-x11-server SLE Module for Development Tools 15 SP7, SLE Module for Basesystem 15 SP7 21.1.15-150700.5.11.1
  • xorg-x11-server SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Workstation Extension 15 SP7 +3 more 1.20.3-150200.22.5.118.1
  • xwayland SLE Workstation Extension 15 SP6, openSUSE Leap 15.6 24.1.1-150600.5.18.1

suse advisories SUSE-SU-2025:21149-1SUSE-SU-2025:3909-1SUSE-SU-2025:3874-1SUSE-SU-2025:3872-1SUSE-SU-2025:3866-1SUSE-SU-2025:3865-1

  • xorg-x11-server openSUSE Leap 16.0 21.1.15-160000.3.1
  • xwayland openSUSE Leap 16.0 24.1.6-160000.3.1
  • xorg-x11-server openSUSE Tumbleweed 21.1.15-7.1
  • xwayland openSUSE Tumbleweed 24.1.8-4.1

opensuse advisories openSUSE-SU-2026:20198-1openSUSE-SU-2025:20099-1openSUSE-SU-2025:15683-1openSUSE-SU-2025:15684-1

  • tigervnc AlmaLinux 9 1.15.0-6.el9_7
  • tigervnc-icons AlmaLinux 9 1.15.0-6.el9_7
  • tigervnc-server AlmaLinux 9 1.15.0-6.el9_7
  • tigervnc-license AlmaLinux 9 1.15.0-6.el9_7
  • tigervnc-selinux AlmaLinux 9 1.15.0-6.el9_7
  • tigervnc-server-module AlmaLinux 9 1.15.0-6.el9_7
  • tigervnc-server-minimal AlmaLinux 9 1.15.0-6.el9_7
  • xorg-x11-server-Xwayland AlmaLinux 9 23.2.7-5.el9_7

almalinux advisories ALSA-2025:20958ALSA-2025:20960ALSA-2025:20961ALSA-2025:21035ALSA-2025:19909ALSA-2025:19432

  • tigervnc Rocky Linux 8 1.15.0-8.el8_10.rocky.0.1
  • tigervnc Rocky Linux 9 1.15.0-6.el9_7
  • xorg-x11-server-Xwayland Rocky Linux 9 23.2.7-5.el9_6
  • xorg-x11-server Rocky Linux 9 1.20.11-32.el9_6
  • xorg-x11-server-Xwayland Rocky Linux 8 21.1.3-19.el8_10
  • xorg-x11-server-Xwayland Rocky Linux 10 24.1.5-5.el10_0
  • xorg-x11-server Rocky Linux 8 1.20.11-27.el8_10

rocky linux advisories RLSA-2025:19909RLSA-2025:20958RLSA-2025:20960RLSA-2025:20961RLSA-2025:19432RLSA-2025:19435

  • xwayland Alpine 3.24, Alpine 3.23, Alpine 3.22 24.1.9-r0
  • xorg-server Alpine 3.24, Alpine 3.23, Alpine 3.22 21.1.19-r0

alpine advisories ALPINE-CVE-2025-62231

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • xorg-x11-server-Xwayland Azure Linux 3.0 24.1.6-3

azure linux advisories AZL-69467

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2025-62231 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-62231 updated cvss 7.3

xorg: xmayland: Value overflow in XkbSetCompatMap()

  • Red Hat Enterprise Linux 6 xorg-x11-server, xorg-x11-server-Xdmx, xorg-x11-server-Xorg, xorg-x11-server-Xvfb, xorg-x11-server-Xnest, xorg-x11-server-common, +2 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder EUS (v.9.4) xorg-x11-server-source 1.20.11-27.el9_4
    fixed: vendor fix RHSA-2025:22742
  • Red Hat Enterprise Linux AppStream (v. 8) tigervnc 1.15.0-8.el8_10, tigervnc-icons 1.15.0-8.el8_10, tigervnc-server 1.15.0-8.el8_10, tigervnc-license 1.15.0-8.el8_10, tigervnc-selinux 1.15.0-8.el8_10, xorg-x11-server 1.20.11-27.el8_10, +9 more
    fixed: vendor fix RHSA-2025:19909
  • Red Hat Enterprise Linux AppStream (v. 9) tigervnc 1.14.1-9.el9_6, tigervnc 1.15.0-6.el9_7, tigervnc-icons 1.14.1-9.el9_6, tigervnc-icons 1.15.0-6.el9_7, tigervnc-server 1.14.1-9.el9_6, tigervnc-server 1.15.0-6.el9_7, +24 more
    fixed: vendor fix RHSA-2025:19489
  • Red Hat Enterprise Linux AppStream (v. 10) xorg-x11-server-Xwayland 24.1.5-5.el10_0, xorg-x11-server-Xwayland 24.1.5-5.el10_1
    fixed: vendor fix RHSA-2025:19435
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) tigervnc 1.9.0-15.el8_2.15, xorg-x11-server 1.20.6-5.el8_2, tigervnc-icons 1.9.0-15.el8_2.15, tigervnc-server 1.9.0-15.el8_2.15, tigervnc-license 1.9.0-15.el8_2.15, xorg-x11-server-Xdmx 1.20.6-5.el8_2, +9 more
    fixed: vendor fix RHSA-2025:22077
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) tigervnc 1.11.0-8.el8_4.14, xorg-x11-server 1.20.10-3.el8_4, tigervnc-icons 1.11.0-8.el8_4.14, tigervnc-server 1.11.0-8.el8_4.14, tigervnc-license 1.11.0-8.el8_4.14, tigervnc-selinux 1.11.0-8.el8_4.14, +9 more
    fixed: vendor fix RHSA-2025:22167
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) tigervnc 1.12.0-6.el8_6.15, xorg-x11-server 1.20.11-6.el8_6, tigervnc-icons 1.12.0-6.el8_6.15, tigervnc-server 1.12.0-6.el8_6.15, tigervnc-license 1.12.0-6.el8_6.15, tigervnc-selinux 1.12.0-6.el8_6.15, +9 more Red Hat Enterprise Linux AppStream E4S (v.8.6) tigervnc 1.12.0-6.el8_6.15, xorg-x11-server 1.20.11-6.el8_6, tigervnc-icons 1.12.0-6.el8_6.15, tigervnc-server 1.12.0-6.el8_6.15, tigervnc-license 1.12.0-6.el8_6.15, tigervnc-selinux 1.12.0-6.el8_6.15, +9 more
    fixed: vendor fix RHSA-2025:22041
show 14 more
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) tigervnc 1.12.0-15.el8_8.16, xorg-x11-server 1.20.11-17.el8_8, tigervnc-icons 1.12.0-15.el8_8.16, tigervnc-server 1.12.0-15.el8_8.16, tigervnc-license 1.12.0-15.el8_8.16, tigervnc-selinux 1.12.0-15.el8_8.16, +9 more
    fixed: vendor fix RHSA-2025:22164
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) tigervnc 1.11.0-22.el9_0.16, xorg-x11-server 1.20.11-12.el9_0, tigervnc-icons 1.11.0-22.el9_0.16, tigervnc-server 1.11.0-22.el9_0.16, tigervnc-license 1.11.0-22.el9_0.16, tigervnc-selinux 1.11.0-22.el9_0.16, +9 more
    fixed: vendor fix RHSA-2025:22056
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) tigervnc 1.12.0-14.el9_2.13, xorg-x11-server 1.20.11-19.el9_2, tigervnc-icons 1.12.0-14.el9_2.13, tigervnc-server 1.12.0-14.el9_2.13, tigervnc-license 1.12.0-14.el9_2.13, tigervnc-selinux 1.12.0-14.el9_2.13, +9 more
    fixed: vendor fix RHSA-2025:22055
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) tigervnc 1.13.1-8.el9_4.8, tigervnc-icons 1.13.1-8.el9_4.8, tigervnc-server 1.13.1-8.el9_4.8, xorg-x11-server 1.20.11-27.el9_4, tigervnc-license 1.13.1-8.el9_4.8, tigervnc-selinux 1.13.1-8.el9_4.8, +9 more
    fixed: vendor fix RHSA-2025:22051
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) tigervnc 1.11.0-8.el8_4.14, xorg-x11-server 1.20.10-3.el8_4, tigervnc-icons 1.11.0-8.el8_4.14, tigervnc-server 1.11.0-8.el8_4.14, tigervnc-license 1.11.0-8.el8_4.14, tigervnc-selinux 1.11.0-8.el8_4.14, +9 more
    fixed: vendor fix RHSA-2025:22167
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) tigervnc 1.12.0-6.el8_6.15, xorg-x11-server 1.20.11-6.el8_6, tigervnc-icons 1.12.0-6.el8_6.15, tigervnc-server 1.12.0-6.el8_6.15, tigervnc-license 1.12.0-6.el8_6.15, tigervnc-selinux 1.12.0-6.el8_6.15, +9 more
    fixed: vendor fix RHSA-2025:22041
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) tigervnc 1.12.0-15.el8_8.16, xorg-x11-server 1.20.11-17.el8_8, tigervnc-icons 1.12.0-15.el8_8.16, tigervnc-server 1.12.0-15.el8_8.16, tigervnc-license 1.12.0-15.el8_8.16, tigervnc-selinux 1.12.0-15.el8_8.16, +9 more
    fixed: vendor fix RHSA-2025:22164
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) xorg-x11-server-source 1.20.11-32.el9_6, xorg-x11-server-source 1.20.11-32.el9_7, xorg-x11-server-Xwayland 23.2.7-5.el9_6, xorg-x11-server-Xwayland 23.2.7-5.el9_7
    fixed: vendor fix RHSA-2025:19433
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) xorg-x11-server-Xwayland-devel 24.1.5-5.el10_0, xorg-x11-server-Xwayland-devel 24.1.5-5.el10_1, xorg-x11-server-Xwayland-debuginfo 24.1.5-5.el10_0, xorg-x11-server-Xwayland-debuginfo 24.1.5-5.el10_1, xorg-x11-server-Xwayland-debugsource 24.1.5-5.el10_0, xorg-x11-server-Xwayland-debugsource 24.1.5-5.el10_1
    fixed: vendor fix RHSA-2025:19435
  • Red Hat Enterprise Linux CRB (v. 8) xorg-x11-server-source 1.20.11-27.el8_10
    fixed: vendor fix RHSA-2025:19434
  • Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION) tigervnc 1.1.0-25.el6_10.15, tigervnc-server 1.1.0-25.el6_10.15
    fixed: vendor fix RHSA-2025:22667
  • Red Hat Enterprise Linux Server (v. 7 ELS) tigervnc 1.8.0-36.el7_9.3, tigervnc-icons 1.8.0-36.el7_9.3, xorg-x11-server 1.20.4-33.el7_9, tigervnc-server 1.8.0-36.el7_9.3, tigervnc-license 1.8.0-36.el7_9.3, xorg-x11-server-Xorg 1.20.4-33.el7_9, +3 more
    fixed: vendor fix RHSA-2025:22096
  • Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION) tigervnc-server-applet 1.1.0-25.el6_10.15, tigervnc-server-module 1.1.0-25.el6_10.15
    fixed: vendor fix RHSA-2025:22667
  • Red Hat Enterprise Linux Server Optional (v. 7 ELS) xorg-x11-server-Xdmx 1.20.4-33.el7_9, xorg-x11-server-Xvfb 1.20.4-33.el7_9, xorg-x11-server-Xnest 1.20.4-33.el7_9, xorg-x11-server-source 1.20.4-33.el7_9, tigervnc-server-applet 1.8.0-36.el7_9.3, tigervnc-server-module 1.8.0-36.el7_9.3, +1 more
    fixed: vendor fix RHSA-2025:22096

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

Affected products

  • X.Org Xwayland
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.