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CVE-2025-62231

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Date: October 30, 2025

Value overflow in Xkb extension XkbSetCompatMap() The XkbCompatMap structure stores some of its values using an unsigned short, but fails to check whether the sum of the input data might overflow the maximum unsigned short value.

Severity Score

Related Resources (18)

https://access.redhat.com/errata/RHSA-2025:19623
https://access.redhat.com/errata/RHSA-2025:20958
http://www.openwall.com/lists/oss-security/2025/10/28/7
https://access.redhat.com/errata/RHSA-2025:21035
https://access.redhat.com/errata/RHSA-2025:19909
https://access.redhat.com/errata/RHSA-2025:20960
https://access.redhat.com/errata/RHSA-2025:20961
https://seclists.org/oss-sec/2025/q4/92
https://access.redhat.com/security/cve/CVE-2025-62231
https://lists.debian.org/debian-lts-announce/2025/10/msg00033.html
https://bugzilla.redhat.com/show_bug.cgi?id=2402660
https://access.redhat.com/errata/RHSA-2025:19434
https://access.redhat.com/errata/RHSA-2025:19489
https://access.redhat.com/errata/RHSA-2025:19435
https://access.redhat.com/errata/RHSA-2025:19432
https://nvd.nist.gov/vuln/detail/CVE-2025-62231
https://access.redhat.com/errata/RHSA-2025:19433
https://www.mend.io/vulnerability-database/CVE-2025-62231

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

Top Fix

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Upgrade Version

Upgrade to version https://gitlab.freedesktop.org/xorg/xserver.git - xorg-server-21.1.19;https://gitlab.freedesktop.org/xorg/xserver.git - xwayland-24.1.9

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): LOW
Availability (A): HIGH

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