Intel E810 Ethernet controller firmware: Improper input validation in E810 firmware lets a privileged local user deny

Impact

Improper input validation in E810 firmware lets a privileged local user deny service on the adapter. On a node whose NIC carries collective traffic, denying the NIC denies the job.

Who can reach it

Privileged local access on the host.

What to do

Fixed in the E810 NVM (adapter firmware) image. Deploy with Intel's NVM Update Utility, which needs a driver reload and a power cycle - not just a warm reboot - for the new image to take effect. Drain the node. Distinct from the ice driver updates: you need both, and they ship on different schedules. Target E810 firmware 4.6 or later.

References