CVE-2023-5574: Red Hat Enterprise Linux
High severity, CVSS 7.0. EPSS: 0.6% chance of exploitation in the next 30 days.
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.
Affected products
Published 2023-10-25. Last modified 2026-06-23.