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CVE-2023-1393

HIGH CVSS: 7.8 Published: 2023-03-30 Modified: 2026-06-17

Description

A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.

Affected Platforms

Fedoraproject FedoraX.Org X Server

Weakness Type

CWE-416, CWE-416

References