X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. Mesa provides a 3D graphics API that is compatible with Open Graphics Library . It also provides hardware-accelerated drivers for many popular graphics chips. The following packages have been upgraded to a later upstream version: egl-wayland , libdrm , libglvnd , libinput , libwacom , mesa , xorg-x11-server . Security Fix: * xorg-x11-server: Out-of-bounds access in XkbSetNames function * xorg-x11-server: Integer underflow in the X input extension protocol * xorg-x11-server: Out-of-bounds access in XkbSetMap function * xorg-x11-server: XkbSelectEvents integer underflow privilege escalation vulnerability * xorg-x11-server: XRecordRegisterClients integer underflow privilege escalation vulnerability * libX11: Integer overflow leads to double free in locale handling * xorg-x11-server: XkbSetDeviceInfo heap-based buffer overflow privilege escalation vulnerability * libX11: Heap overflow in the X input method client * xorg-x11-server: Leak of uninitialized heap memory from the X server to clients in AllocatePixmap of dix/pixmap.c For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.