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Fencer Intel
high 7.3

CVE-2025-62230 json

Xorg: xwayland: use-after-free in xkb client resource removal

published last yr. modified 4d ago also EUVD-2025-36902

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 20%
public exploits
0
none known

Summary

A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

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-2025-62230

  • 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-2025-62230

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-2025-62230

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-69580

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-2025-62230 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-2025-62230 updated cvss 7.3

xorg: xwayland: Use-after-free in Xkb client resource removal

  • 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

0.28% chance of exploitation in the next 30 days, higher than 20% 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

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.