The vulnerability of the X Window System graphical server, as well as the ALT Linux, ROSA Linux, MSVSfer operating systems, allows attackers to gain access to protected information.

The vulnerability of the X Window System graphical server, as well as operating systems like ALT Linux and ROSA Linux, stems from the lack of checks to ensure that a child window is created by only one application within another application’s window. Exploiting this vulnerability allows an attack...