CVE-2024-0229: Fedoraproject Fedora

High severity, CVSS 7.8. EPSS: 1.2% chance of exploitation in the next 30 days.

An out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege escalation (if the server runs with extended privileges), or remote code execution in SSH X11 forwarding environments.

Affected products

• Fedoraproject Fedora: version 39 only
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Red Hat Enterprise Linux Aus: version 8.2 only; version 8.4 only
• Red Hat Enterprise Linux Eus: version 8.6 only; version 8.8 only; version 9.0 only; version 9.2 only
• Red Hat Enterprise Linux Tus: version 8.2 only; version 8.4 only
• Red Hat Enterprise Linux Update Services For SAP Solutions: version 8.2 only; version 8.4 only
• X.org X Server: before 21.1.11 (fixed in 21.1.11)
• X.org Xwayland: before 23.2.4 (fixed in 23.2.4)

Published 2024-02-09. Last modified 2026-06-17.