Review reviewHigh

CVE-2025-62230

X.Org Xwayland, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

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.

CVSS: 7.3
EPSS: 0.26%
CISA KEV: Not listed
Published: 2025.10.30

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.26%

Technical severityCVSS 7.3

Vulnerability overview

Affected product and versions

Product: X.Org Xwayland, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
Affected versions: < 21.1.19, < 24.1.9, >= 4.1.0 < 4.1.1.30, 4.1.2.0, >= 7.2.5 < 7.2.5.12, >= 7.3.2 < 7.3.3.3, 7.3.4, 11.0, 8.0, 9.0, 10.0, 8.2, 8.4, 8.6, 6.0, 7.0, 9.4, 8.8, 9.2
Fixed versions: 21.1.19, 24.1.9, 4.1.1.30, 7.2.5.12, 7.3.3.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that X.Org Xwayland, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
CWE: CWE-416