X.org developers have recently published a corrected release for X.org Server 21.13, addressing an error that was made in the previous version while fixing the vulnerabilities identified as CVE-20241083. The correction resulted in a double call of the Free() function in specific situations, which could lead to an emergency termination of the X-server. However, despite the nature of the error resembling a vulnerability of the Double-Free class, developers clarified that it is not classified as a vulnerability but rather a potential issue.
A similar issue was also resolved in the DDX component XWAYLAND 23.2.6, which plays a crucial role in launching X.org Server for running X11-applications within the Wayland environment.
/Reports, release notes, official announcements.