CVE-2023-5574 Information

Description

A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0 a use-after-free issue may be triggered during shutdown or reset of the Xvfb server allowing for possible escalation of privileges or denial of service.

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2244735 https://access.redhat.com/security/cve/CVE-2023-5574 https://lists.x.org/archives/xorg-announce/2023-October/003430.html