AZL-111491: CVE-2026-93520 affecting package wayland 1.22.0-1

Q: Who can exploit this issue?

An attacker must be an authenticated X client. The issue affects X.org X server and XWayland processes in the affected version ranges.

Q: What could successful exploitation allow?

An authenticated X client could crash the X server. The overflow could also potentially allow code execution in the X server context.

Q: Which versions are affected?

The issue applies to X.org X server versions before 2.1.25 and XWayland versions before 24.1.14.

Published Oct 28, 2026

Updated

A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.

Affected Software

1 affected component

azure-linux/wayland<=1.22.0-1

Event History

Oct 28, 2026

Advisory Published

via OSV·03:17 PM

Data Sourced

via OSV·03:17 PM

DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

CVE-2026-93520

Frequently Asked Questions

Who can exploit this issue?

An attacker must be an authenticated X client. The issue affects X.org X server and XWayland processes in the affected version ranges.

What could successful exploitation allow?

An authenticated X client could crash the X server. The overflow could also potentially allow code execution in the X server context.

Which versions are affected?

The issue applies to X.org X server versions before 2.1.25 and XWayland versions before 24.1.14.

AZL-111491: CVE-2026-93520 affecting package wayland 1.22.0-1

Affected Software

Event History

Child vulnerabilities

Frequently Asked Questions

Who can exploit this issue?

What could successful exploitation allow?

Which versions are affected?

Company

Resources

Contact

Frequently Asked Questions

Who can exploit this issue?

What could successful exploitation allow?

Which versions are affected?