The microcode_ctl utility is a companion to the microcode driver written
by Tigran Aivazian
The microcode update is volatile and needs to be uploaded on each system
boot i.e. it doesn't reflash your cpu permanently, reboot and it reverts
back to the old microcode.
Update Information:
Update to upstream 2.1-51. 20260210 Addition of 06-ae-01/0x97 (GNR-D B0/B1) microcode at revision 0x10002f3; Update of 06-6a-06/0x87 (ICX-SP D0) microcode from revision 0xd000410 up to 0xd000421; Update of 06-6c-01/0x10 (ICL-D B0) microcode from revision 0x10002e0 up to 0x10002f1; Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0xca up to 0xcc; Update of 06-8c-01/0x80 (TGL-UP3/UP4 B1) microcode from revision 0xbc up to 0xbe; Update of 06-8c-02/0xc2 (TGL-R C0) microcode from revision 0x3c up to 0x3e; Update of 06-8d-01/0xc2 (TGL-H R0) microcode from revision 0x56 up to 0x58; Update of 06-8f-04/0x87 (SPR-SP E0/S1) microcode (in intel-ucode/06-8f-07) from revision 0x2b000643 up to 0x2b000661; Update of 06-8f-05/0x87 (SPR-SP E2) microcode (in intel-ucode/06-8f-07) from revision 0x2b000643 up to 0x2b000661; Update of 06-8f-06/0x87 (SPR-SP E3) microcode (in intel-ucode/06-8f-07) from revision 0x2b000643 up to 0x2b000...
* Wed Feb 18 2026 Eugene Syromiatnikov
[ 1 ] Bug #2431378 - microcode_ctl is outdated
https://bugzilla.redhat.com/show_bug.cgi?id=2431378
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-3b12e49fee' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
Get the latest Linux and open source security news straight to your inbox.