xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: stack buffer overflow in XKB key types due to unchecked shift levels

A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel XkbNumKbdGroups but CheckKeyTypes does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift...

Fedora 41 : niri / xwayland-satellite (2025-2bcbe8b09c)

The remote Fedora 41 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2025-2bcbe8b09c advisory. Update niri to version 25.08 and xwayland-satellite to version 0.7. Notably, niri now supports xwayland out-of-the-box without manual configuration, and...

Fedora 42 : niri / xwayland-satellite (2025-852b3e077d)

The remote Fedora 42 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2025-852b3e077d advisory. Update niri to version 25.08 and xwayland-satellite to version 0.7. Notably, niri now supports xwayland out-of-the-box without manual configuration, and...