CVE-2023-1393 Information

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.

Reference

https://www.openwall.com/lists/oss-security/2023/03/29/1