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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00277.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
X.Org Xwayland unaffected
Version Status Constraints
0 affected < 24.1.9
Red Hat Red Hat Enterprise Linux 10 affected
Version Status Constraints
0:24.1.5-5.el10_0 unaffected < *
Red Hat Red Hat Enterprise Linux 10 affected
Version Status Constraints
0:24.1.5-5.el10_1 unaffected < *
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION affected
Version Status Constraints
0:1.1.0-25.el6_10.15 unaffected < *
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support affected
Version Status Constraints
0:1.20.4-33.el7_9 unaffected < *
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support affected
Version Status Constraints
0:1.8.0-36.el7_9.3 unaffected < *
Red Hat Red Hat Enterprise Linux 8 affected
Version Status Constraints
0:21.1.3-19.el8_10 unaffected < *
Red Hat Red Hat Enterprise Linux 8 affected
Version Status Constraints
0:1.20.11-27.el8_10 unaffected < *
Red Hat Red Hat Enterprise Linux 8 affected
Version Status Constraints
0:1.15.0-8.el8_10 unaffected < *
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support affected
Version Status Constraints
0:1.9.0-15.el8_2.15 unaffected < *
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support affected
Version Status Constraints
0:1.20.6-5.el8_2 unaffected < *
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support affected
Version Status Constraints
0:1.11.0-8.el8_4.14 unaffected < *
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support affected
Version Status Constraints
0:1.20.10-3.el8_4 unaffected < *
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On affected
Version Status Constraints
0:1.11.0-8.el8_4.14 unaffected < *
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On affected
Version Status Constraints
0:1.20.10-3.el8_4 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support affected
Version Status Constraints
0:1.12.0-6.el8_6.15 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support affected
Version Status Constraints
0:1.20.11-6.el8_6 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support affected
Version Status Constraints
0:21.1.3-2.el8_6.5 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service affected
Version Status Constraints
0:1.12.0-6.el8_6.15 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service affected
Version Status Constraints
0:1.20.11-6.el8_6 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service affected
Version Status Constraints
0:21.1.3-2.el8_6.5 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions affected
Version Status Constraints
0:1.12.0-6.el8_6.15 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions affected
Version Status Constraints
0:1.20.11-6.el8_6 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions affected
Version Status Constraints
0:21.1.3-2.el8_6.5 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service affected
Version Status Constraints
0:1.12.0-15.el8_8.16 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service affected
Version Status Constraints
0:1.20.11-17.el8_8 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service affected
Version Status Constraints
0:21.1.3-12.el8_8 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions affected
Version Status Constraints
0:1.12.0-15.el8_8.16 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions affected
Version Status Constraints
0:1.20.11-17.el8_8 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions affected
Version Status Constraints
0:21.1.3-12.el8_8 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:1.20.11-32.el9_6 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:1.14.1-9.el9_6 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:23.2.7-5.el9_6 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:1.15.0-6.el9_7 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:23.2.7-5.el9_7 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:1.20.11-32.el9_7 unaffected < *
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions affected
Version Status Constraints
0:1.11.0-22.el9_0.16 unaffected < *
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions affected
Version Status Constraints
0:1.20.11-12.el9_0 unaffected < *
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions affected
Version Status Constraints
0:21.1.3-4.el9_0 unaffected < *
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions affected
Version Status Constraints
0:1.12.0-14.el9_2.13 unaffected < *
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions affected
Version Status Constraints
0:1.20.11-19.el9_2 unaffected < *
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions affected
Version Status Constraints
0:21.1.3-9.el9_2 unaffected < *
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support affected
Version Status Constraints
0:1.13.1-8.el9_4.8 unaffected < *
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support affected
Version Status Constraints
0:1.20.11-27.el9_4 unaffected < *
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support affected
Version Status Constraints
0:22.1.9-7.el9_4 unaffected < *
Red Hat Red Hat Enterprise Linux 6 unknown —

Configuration 1 [-]

OR cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*

Configuration 2 [-]

OR cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*

Configuration 3 [-]

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Configuration 4 [-]

OR cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_els:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_els:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:9.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_tus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_tus:8.8:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.8:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*

No data.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4353-1 xorg-server security update
Debian DSA Debian DSA DSA-6044-1 xorg-server security update
Fixes

Solution

No solution given by the vendor.

Workaround

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

References
Link Providers
http://www.openwall.com/lists/oss-security/2025/10/28/7 cve-icon
https://access.redhat.com/errata/RHSA-2025:19432 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19433 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19434 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19435 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19489 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19623 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:19909 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:20958 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:20960 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:20961 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:21035 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22040 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22041 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22051 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22055 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22056 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22077 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22096 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22164 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22167 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22364 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22365 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22426 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22427 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22667 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22729 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22742 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:22753 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0031 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0033 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0034 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0035 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:0036 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2025-62231 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2402660 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/10/msg00033.html cve-icon
https://lists.x.org/archives/xorg-announce/2025-October/003635.html cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-62231 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-62231 cve-icon
History

Mon, 20 Apr 2026 14:00:00 +0000

Type Values Removed Values Added
References

Thu, 26 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 05 Jan 2026 10:30:00 +0000

Type Values Removed Values Added
References

Mon, 05 Jan 2026 06:30:00 +0000

Type Values Removed Values Added
References

Thu, 04 Dec 2025 17:15:00 +0000

Type Values Removed Values Added
References

Thu, 04 Dec 2025 11:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_eus:9.4::crb
References

Thu, 04 Dec 2025 08:00:00 +0000

Type Values Removed Values Added
References

Wed, 03 Dec 2025 15:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhel_els:6
References

Mon, 01 Dec 2025 19:00:00 +0000

Type Values Removed Values Added
References

Mon, 01 Dec 2025 07:00:00 +0000

Type Values Removed Values Added
References

Wed, 26 Nov 2025 07:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus Long Life
CPEs cpe:/a:redhat:rhel_aus:8.4::appstream
cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Vendors & Products Redhat rhel Eus Long Life
References

Wed, 26 Nov 2025 05:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:8.8::appstream
cpe:/a:redhat:rhel_tus:8.8::appstream
References

Tue, 25 Nov 2025 17:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:7
References

Tue, 25 Nov 2025 13:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_aus:8.2::appstream
References

Tue, 25 Nov 2025 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els
References

Tue, 25 Nov 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.4::appstream
Vendors & Products Redhat rhel Eus
References

Tue, 25 Nov 2025 08:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
References

Tue, 25 Nov 2025 08:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:9.0::appstream
References

Tue, 25 Nov 2025 08:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel E4s
Redhat rhel Tus
CPEs cpe:/a:redhat:rhel_aus:8.6::appstream
cpe:/a:redhat:rhel_e4s:8.6::appstream
cpe:/a:redhat:rhel_tus:8.6::appstream
Vendors & Products Redhat rhel Aus
Redhat rhel E4s
Redhat rhel Tus
References

Tue, 11 Nov 2025 20:45:00 +0000

Type Values Removed Values Added
References

Tue, 11 Nov 2025 20:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10.1
References

Tue, 11 Nov 2025 16:45:00 +0000

Type Values Removed Values Added
References

Thu, 06 Nov 2025 13:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8
References

Tue, 04 Nov 2025 22:30:00 +0000

Type Values Removed Values Added
References

Tue, 04 Nov 2025 10:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9
References

Mon, 03 Nov 2025 18:30:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 16:15:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 10:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/a:redhat:enterprise_linux:9::crb
cpe:/o:redhat:enterprise_linux:10.0
References

Mon, 03 Nov 2025 09:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8::appstream
cpe:/a:redhat:enterprise_linux:8::crb
References

Thu, 30 Oct 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 30 Oct 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 30 Oct 2025 06:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H'}

Thu, 30 Oct 2025 05:15:00 +0000

Type Values Removed Values Added
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.
Title Xorg: xmayland: value overflow in xkbsetcompatmap()
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-190
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-04-20T13:50:20.474Z

Reserved: 2025-10-09T04:46:44.074Z

Link: CVE-2025-62231

cve-icon Vulnrichment

Updated: 2025-11-04T21:14:19.743Z

cve-icon NVD

Status : Analyzed

Published: 2025-10-30T05:15:39.120

Modified: 2026-07-01T15:17:04.210

Link: CVE-2025-62231

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-29T00:00:00Z

Links: CVE-2025-62231 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-20T15:30:06Z

Weaknesses