CVE-2025-26598 | Red Hat Enterprise Linux 6/7/8/9 X.org X11 Server/TigerVNC GetBarrierDevice out-of-bounds write

A vulnerability was found in Red Hat Enterprise Linux 6/7/8/9. It has been declared as critical. This vulnerability affects the function GetBarrierDevice of the component X.org X11 Server/TigerVNC. The manipulation leads to out-of-bounds write.

This vulnerability was named CVE-2025-26598. Attacking locally is a requirement. There is no exploit available.