Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2025-62230

Use After Free

Published: Oct 30, 2025 | Modified: Jan 05, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.3 MODERATE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2025-62230
CWEhttps://cwe.mitre.org/data/definitions/416.html

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.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
Red Hat Enterprise Linux 10RedHatxorg-x11-server-Xwayland-0:24.1.5-5.el10_0*
Red Hat Enterprise Linux 10RedHatxorg-x11-server-Xwayland-0:24.1.5-5.el10_1*
Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONRedHattigervnc-0:1.1.0-25.el6_10.15*
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHatxorg-x11-server-0:1.20.4-33.el7_9*
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHattigervnc-0:1.8.0-36.el7_9.3*
Red Hat Enterprise Linux 8RedHatxorg-x11-server-Xwayland-0:21.1.3-19.el8_10*
Red Hat Enterprise Linux 8RedHatxorg-x11-server-0:1.20.11-27.el8_10*
Red Hat Enterprise Linux 8RedHattigervnc-0:1.15.0-8.el8_10*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHattigervnc-0:1.9.0-15.el8_2.15*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatxorg-x11-server-0:1.20.6-5.el8_2*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHattigervnc-0:1.11.0-8.el8_4.14*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatxorg-x11-server-0:1.20.10-3.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHattigervnc-0:1.11.0-8.el8_4.14*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatxorg-x11-server-0:1.20.10-3.el8_4*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHattigervnc-0:1.12.0-6.el8_6.15*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatxorg-x11-server-0:1.20.11-6.el8_6*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatxorg-x11-server-Xwayland-0:21.1.3-2.el8_6.5*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHattigervnc-0:1.12.0-6.el8_6.15*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatxorg-x11-server-0:1.20.11-6.el8_6*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatxorg-x11-server-Xwayland-0:21.1.3-2.el8_6.5*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHattigervnc-0:1.12.0-6.el8_6.15*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatxorg-x11-server-0:1.20.11-6.el8_6*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatxorg-x11-server-Xwayland-0:21.1.3-2.el8_6.5*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHattigervnc-0:1.12.0-15.el8_8.16*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatxorg-x11-server-0:1.20.11-17.el8_8*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatxorg-x11-server-Xwayland-0:21.1.3-12.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHattigervnc-0:1.12.0-15.el8_8.16*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatxorg-x11-server-0:1.20.11-17.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatxorg-x11-server-Xwayland-0:21.1.3-12.el8_8*
Red Hat Enterprise Linux 9RedHatxorg-x11-server-0:1.20.11-32.el9_6*
Red Hat Enterprise Linux 9RedHattigervnc-0:1.14.1-9.el9_6*
Red Hat Enterprise Linux 9RedHatxorg-x11-server-Xwayland-0:23.2.7-5.el9_6*
Red Hat Enterprise Linux 9RedHattigervnc-0:1.15.0-6.el9_7*
Red Hat Enterprise Linux 9RedHatxorg-x11-server-Xwayland-0:23.2.7-5.el9_7*
Red Hat Enterprise Linux 9RedHatxorg-x11-server-0:1.20.11-32.el9_7*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHattigervnc-0:1.11.0-22.el9_0.16*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatxorg-x11-server-0:1.20.11-12.el9_0*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatxorg-x11-server-Xwayland-0:21.1.3-4.el9_0*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHattigervnc-0:1.12.0-14.el9_2.13*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatxorg-x11-server-0:1.20.11-19.el9_2*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatxorg-x11-server-Xwayland-0:21.1.3-9.el9_2*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHattigervnc-0:1.13.1-8.el9_4.8*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatxorg-x11-server-0:1.20.11-27.el9_4*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatxorg-x11-server-Xwayland-0:22.1.9-7.el9_4*
Xorg-serverUbuntudevel*
Xorg-serverUbuntujammy*
Xorg-serverUbuntunoble*
Xorg-serverUbuntuplucky*
Xorg-serverUbuntuquesting*
Xorg-serverUbuntuupstream*
XwaylandUbuntudevel*
XwaylandUbuntujammy*
XwaylandUbuntunoble*
XwaylandUbuntuplucky*
XwaylandUbuntuquesting*
XwaylandUbuntuupstream*

Potential Mitigations

References

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