Use-After-Free Flaw in X.Org X Server's X Keyboard Extension Impacting Red Hat
CVE-2025-62230

7.3HIGH

Key Information:

Vendor

X.org

Status
Xwayland
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6 Extended Lifecycle Support - Extension
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Vendor
CVE Published:
30 October 2025

What is CVE-2025-62230?

A flaw exists in the X.Org X server’s X Keyboard (Xkb) extension that occurs during the cleanup of client resources. Specifically, the software improperly frees certain data structures without detaching the associated resources, which can result in a use-after-free condition. This vulnerability may lead to memory corruption or application crashes when affected clients disconnect, creating potential instability and security issues within the system.

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Affected Version(s)

Red Hat Enterprise Linux 10 0:24.1.5-5.el10_0

Red Hat Enterprise Linux 10 0:24.1.5-5.el10_1

Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10.15

References

https://access.redhat.com/errata/RHSA-2025:19432
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19433
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19434
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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