Xorg: xmayland: value overflow in xkbsetcompatmap()

7.3 CVSS

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Red Hat would like to thank Jan-Niklas Sohn (Trend Micro Zero Day Initiative) for reporting this issue.

References

More from X.Org

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CVE-2025-62230

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

High 7.3

CVE-2025-62229

Xorg: xmayland: use-after-free in xpresentnotify structure creation

High 7.3

CVE-2025-49180

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate and reflect (randr) extension

High 7.8

CVE-2025-49179

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension

High 7.3

CVE-2025-49178

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: unprocessed client request due to bytes to ignore

Medium 5.5

Affected Vendor

X.Org

View all reports →

Affected Software

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

Vulnerable Versions:

0, 0:24.1.5-5.el10_0, 0:24.1.5-5.el10_1, 0:1.1.0-25.el6_10.15, 0:1.20.4-33.el7_9, 0:1.8.0-36.el7_9.3, 0:21.1.3-19.el8_10, 0:1.20.11-27.el8_10, 0:1.15.0-8.el8_10, 0:1.9.0-15.el8_2.15, 0:1.20.6-5.el8_2, 0:1.11.0-8.el8_4.14, 0:1.20.10-3.el8_4, 0:1.12.0-6.el8_6.15, 0:1.20.11-6.el8_6, 0:21.1.3-2.el8_6.5, 0:1.12.0-15.el8_8.16, 0:1.20.11-17.el8_8, 0:21.1.3-12.el8_8, 0:1.20.11-32.el9_6, 0:1.14.1-9.el9_6, 0:23.2.7-5.el9_6, 0:1.15.0-6.el9_7, 0:23.2.7-5.el9_7, 0:1.20.11-32.el9_7, 0:1.11.0-22.el9_0.16, 0:1.20.11-12.el9_0, 0:21.1.3-4.el9_0, 0:1.12.0-14.el9_2.13, 0:1.20.11-19.el9_2, 0:21.1.3-9.el9_2, 0:1.13.1-8.el9_4.8, 0:1.20.11-27.el9_4, 0:22.1.9-7.el9_4