Intel Xeon D / Xeon Scalable system firmware, Server Board and Server System: A buffer overflow in system firmware

Impact

A buffer overflow in system firmware across Xeon D and Xeon Scalable server boards, letting a privileged user escalate into firmware. Affects the exact generations that built out the first wave of GPU datacenter capacity, and many of those nodes are still running.

Who can reach it

Privileged local access on the host.

What to do

Fixed in platform BIOS/UEFI firmware. That means an OEM release, a per-node drain, a flash and a cold reboot - and OEM availability commonly lags the Intel advisory by quarters on server boards. There is no microcode or OS-level shortcut for this class; budget it as a fleet-wide maintenance campaign, not a patch.

References