This Patch Tuesday has brought a slew of Intel CPU microcode updates for the past few processor generations to address six new high severity vulnerabilities.

New CPU microcode was released today for Arrow Lake, Xeon Scalable Gen3 and newer through Xeon 6 Sierra Forest / Granite Rapids, Xeon D-17xx / Xeon D-27xx, Core Ultra 200V Lunar Lake, and Core Gen 13 Raptor Lake.

There are a number of functional issues resolved in the new CPU microcode plus six new high severity items made public today for Patch Tuesday:

INTEL-SA-01249 - 2025.2 IPU, Intel® Processor Stream Cache Advisory for escalation of privilege.

INTEL-SA-01308 - Intel Xeon 6 Scalable Processors Advisory for escalation of privilege.

INTEL-SA-01310 - Intel OOBM Services Module Advisory for escalation of privilege.

INTEL-SA-01311 - Intel Xeon 6 Processor with Intel TDX Advisory for escalation of privilege.

INTEL-SA-01313 - 2025.3 IPU, Intel Xeon Processor Firmware Advisory for escalation of privilege and denial of service.

INTEL-SA-01367 - Intel Xeon 6 Processor Firmware Advisory for escalation of privilege.

All rated as "HIGH" severity. Particular on the Intel Xeon side these CPU microcode updates are quite pressing.

Those wanting to grab the newest Intel CPU microcode files for use on Linux can find them via today's [1]microcode-20250812 release .



[1] https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20250812