A flaw was found in xorg-x11-server. An authenticated local user can trigger an out-of-bounds heap memory read by sending specially crafted X Keyboard Extension (XKB) requests with inconsistent key range parameters. This flaw leads to information disclosure, allowing the user to read sensitive data from the server's heap memory.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
X.org
  • X Server

No data.

No data.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-93524 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-93524 cve-icon
History

Sun, 18 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared X.org
X.org x Server
Vendors & Products X.org
X.org x Server

Thu, 08 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in xorg-x11-server. An authenticated local user can trigger an out-of-bounds heap memory read by sending specially crafted X Keyboard Extension (XKB) requests with inconsistent key range parameters. This flaw leads to information disclosure, allowing the user to read sensitive data from the server's heap memory.
Title xorg-x11-server: XKB SetMap Key Width/Action Count Desync Out-Of-Bounds Read
Weaknesses CWE-125
References
Metrics threat_severity

None

 cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

threat_severity

Low
cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Low

Publid Date: 2026-10-07T12:00:00Z

Links: CVE-2026-93524 - Bugzilla