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Fedora 41: microcode_ctl 2025-e5d3928f2c critical: CPU microcode update

fedora
Calendar Grey June 4, 2025
Dist Fedora Esm H88
The recent microcode_ctl update for Fedora 41 brings enhancements with new CPU microcode implementations, resolving various concerns.
Update to upstream 2.1-49

Summary

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 2.1-49. 20250512 Addition of 06-ad-01/0x20 (GNR-AP/SP H0) microcode at revision 0xa0000d1; Addition of 06-ad-01/0x95 (GNR-AP/SP B0) microcode at revision 0x10003a2; Addition of 06-b5-00/0x80 (ARL-U A1) microcode at revision 0xa; Addition of 06-bd-01/0x80 (LNL B0) microcode at revision 0x11f; Addition of 06-c5-02/0x82 (ARL-H A1) microcode at revision 0x118; Addition of 06-c6-02/0x82 (ARL-HX 8P/S B0) microcode (in intel-ucode/06-c5-02) at revision 0x118; Addition of 06-c6-04/0x82 microcode (in intel-ucode/06-c5-02) at revision 0x118; Addition of 06-ca-02/0x82 microcode (in intel-ucode/06-c5-02) at revision 0x118; Addition of 06-c5-02/0x82 (ARL-H A1) microcode (in intel-ucode/06-c6-02) at revision 0x118; Addition of 06-c6-02/0x82 (ARL-HX 8P/S B0) microcode at revision 0x118; Addition of 06-c6-04/0x82 microcode (in intel-ucode/06-c6-02) at revision 0x118; Addition of 06-ca-02/0x82 microcode (in intel-ucode/06-c6-02) ...

Change Log

* Wed May 21 2025 Eugene Syromiatnikov 2:2.1-67.2 - Update to upstream 2.1-49. 20250512 - Addition of 06-ad-01/0x20 (GNR-AP/SP H0) microcode at revision 0xa0000d1; - Addition of 06-ad-01/0x95 (GNR-AP/SP B0) microcode at revision 0x10003a2; - Addition of 06-b5-00/0x80 (ARL-U A1) microcode at revision 0xa; - Addition of 06-bd-01/0x80 (LNL B0) microcode at revision 0x11f; - Addition of 06-c5-02/0x82 (ARL-H A1) microcode at revision 0x118; - Addition of 06-c6-02/0x82 (ARL-HX 8P/S B0) microcode (in intel-ucode/06-c5-02) at revision 0x118; - Addition of 06-c6-04/0x82 microcode (in intel-ucode/06-c5-02) at revision 0x118; - Addition of 06-ca-02/0x82 microcode (in intel-ucode/06-c5-02) at revision 0x118; - Addition of 06-c5-02/0x82 (ARL-H A1) microcode (in intel-ucode/06-c6-02) at revision 0x118; - Addition of 06-c6-02/0x82 (ARL-HX 8P/S B0) microcode at revision 0x118; - Addition of 06-c6-04/0x82 microcode (in intel-ucode/06-c6-02) at revision 0x118; - Addition of 06-ca-02/0x82 microcode (in intel-ucode/06-c6-02) at revision 0x118; - Removal of 06-55-06/0xbf (CLX-SP B0) microcode at revision 0x4003605; - Removal of 06-cf-01/0x87 (EMR-SP A0) microcode at revision 0x21000291; - Removal of 06-cf-02/0x87 (EMR-SP A1) microcode (in intel-ucode/06-cf-01) at revision 0x21000291; - Update of 06-55-07/0xbf (CLX-SP/W/X B1/L1) microcode from revision 0x5003707 up to 0x5003901; - Update of 06-55-0b/0xbf (CPX-SP A1) microcode from revision 0x7002904 up to 0x7002b01; - Update of 06-6a-06/0x87 (ICX-SP D0) microcode from revision 0xd0003f5 up to 0xd000404; - Update of 06-6c-01/0x10 (ICL-D B0) microcode from revision 0x10002c0 up to 0x10002d0; - Update of 06-7a-08/0x01 (GLK-R R0) microcode from revision 0x24 up to 0x26; - Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0xc6 up to 0xca; - Update of 06-8c-01/0x80 (TGL-UP3/UP4 B1) microcode from revision 0xb8 up to 0xbc; - Update of 06-8c-02/0xc2 (TGL-R C0) microcode from revision 0x38 up to 0x3c; - Update of 06-8d-01/0xc2 (TGL-H R0) microcode from revision 0x52 up to 0x56; - Update of 06-8e-0c/0x94 (AML-Y 4+2 V0, CML-U 4+2 V0, WHL-U V0) microcode from revision 0xfc up to 0x100; - Update of 06-8f-04/0x87 (SPR-SP E0/S1) microcode (in intel-ucode/06-8f-07) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-05/0x87 (SPR-SP E2) microcode (in intel-ucode/06-8f-07) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-06/0x87 (SPR-SP E3) microcode (in intel-ucode/06-8f-07) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-07/0x87 (SPR-SP E4/S2) microcode from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-08/0x87 (SPR-SP E5/S3) microcode (in intel-ucode/06-8f-07) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-04/0x10 microcode (in intel-ucode/06-8f-08) from revision 0x2c0003e0 up to 0x2c0003f7; - Update of 06-8f-04/0x87 (SPR-SP E0/S1) microcode (in intel-ucode/06-8f-08) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-05/0x10 (SPR-HBM B1) microcode (in intel-ucode/06-8f-08) from revision 0x2c0003e0 up to 0x2c0003f7; - Update of 06-8f-05/0x87 (SPR-SP E2) microcode (in intel-ucode/06-8f-08) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-06/0x10 microcode (in intel-ucode/06-8f-08) from revision 0x2c0003e0 up to 0x2c0003f7; - Update of 06-8f-06/0x87 (SPR-SP E3) microcode (in intel-ucode/06-8f-08) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-07/0x87 (SPR-SP E4/S2) microcode (in intel-ucode/06-8f-08) from revision 0x2b000620 up to 0x2b000639; - Update of 06-8f-08/0x10 (SPR-HBM B3) microcode from revision 0x2c0003e0 up to 0x2c0003f7; - Update of 06-8f-08/0x87 (SPR-SP E5/S3) microcode from revision 0x2b000620 up to 0x2b000639; - Update of 06-97-02/0x07 (ADL-HX/S 8+8 C0) microcode from revision 0x38 up to 0x3a; - Update of 06-97-05/0x07 (ADL-S 6+0 K0) microcode (in intel-ucode/06-97-02) from revision 0x38 up to 0x3a; - Update of 06-bf-02/0x07 (ADL C0) microcode (in intel-ucode/06-97-02) from revision 0x38 up to 0x3a; - Update of 06-bf-05/0x07 (ADL C0) microcode (in intel-ucode/06-97-02) from revision 0x38 up to 0x3a; - Update of 06-bf-06/0x07 microcode (in intel-ucode/06-97-02) from revision 0x38 up to 0x3a; - Update of 06-bf-07/0x07 microcode (in intel-ucode/06-97-02) from revision 0x38 up to 0x3a; - Update of 06-97-02/0x07 (ADL-HX/S 8+8 C0) microcode (in intel-ucode/06-97-05) from revision 0x38 up to 0x3a; - Update of 06-97-05/0x07 (ADL-S 6+0 K0) microcode from revision 0x38 up to 0x3a; - Update of 06-bf-02/0x07 (ADL C0) microcode (in intel-ucode/06-97-05) from revision 0x38 up to 0x3a; - Update of 06-bf-05/0x07 (ADL C0) microcode (in intel-ucode/06-97-05) from revision 0x38 up to 0x3a; - Update of 06-bf-06/0x07 microcode (in intel-ucode/06-97-05) from revision 0x38 up to 0x3a; - Update of 06-bf-07/0x07 microcode (in intel-ucode/06-97-05) from revision 0x38 up to 0x3a; - Update of 06-9a-03/0x80 (ADL-P 6+8/U 9W L0/R0) microcode from revision 0x436 up to 0x437; - Update of 06-9a-04/0x80 (ADL-P 2+8 R0) microcode (in intel-ucode/06-9a-03) from revision 0x436 up to 0x437; - Update of 06-9a-03/0x80 (ADL-P 6+8/U 9W L0/R0) microcode (in intel-ucode/06-9a-04) from revision 0x436 up to 0x437; - Update of 06-9a-04/0x40 (AZB A0) microcode from revision 0x9 up to 0xa; - Update of 06-9a-04/0x80 (ADL-P 2+8 R0) microcode from revision 0x436 up to 0x437; - Update of 06-9e-0d/0x22 (CFL-H/S/Xeon E R0) microcode from revision 0x102 up to 0x104; - Update of 06-a5-02/0x20 (CML-H R1) microcode from revision 0xfc up to 0x100; - Update of 06-a5-03/0x22 (CML-S 6+2 G1) microcode from revision 0xfc up to 0x100; - Update of 06-a5-05/0x22 (CML-S 10+2 Q0) microcode from revision 0xfc up to 0x100; - Update of 06-a6-00/0x80 (CML-U 6+2 A0) microcode from revision 0xfe up to 0x102; - Update of 06-a6-01/0x80 (CML-U 6+2 v2 K1) microcode from revision 0xfc up to 0x100; - Update of 06-a7-01/0x02 (RKL-S B0) microcode from revision 0x63 up to 0x64; - Update of 06-aa-04/0xe6 (MTL-H/U C0) microcode from revision 0x20 up to 0x24; - Update of 06-af-03/0x01 (SRF-SP C0) microcode from revision 0x3000330 up to 0x3000341; - Update of 06-b7-01/0x32 (RPL-S B0) microcode from revision 0x12c up to 0x12f; - Update of 06-b7-04/0x32 microcode (in intel-ucode/06-b7-01) from revision 0x12c up to 0x12f; - Update of 06-ba-02/0xe0 (RPL-H 6+8/P 6+8 J0) microcode from revision 0x4124 up to 0x4128; - Update of 06-ba-03/0xe0 (RPL-U 2+8 Q0) microcode (in intel-ucode/06-ba-02) from revision 0x4124 up to 0x4128; - Update of 06-ba-08/0xe0 microcode (in intel-ucode/06-ba-02) from revision 0x4124 up to 0x4128; - Update of 06-ba-02/0xe0 (RPL-H 6+8/P 6+8 J0) microcode (in intel-ucode/06-ba-03) from revision 0x4124 up to 0x4128; - Update of 06-ba-03/0xe0 (RPL-U 2+8 Q0) microcode from revision 0x4124 up to 0x4128; - Update of 06-ba-08/0xe0 microcode (in intel-ucode/06-ba-03) from revision 0x4124 up to 0x4128; - Update of 06-be-00/0x19 (ADL-N A0) microcode from revision 0x1c up to 0x1d; - Update of 06-97-02/0x07 (ADL-HX/S 8+8 C0) microcode (in intel-ucode/06-bf-02) from revision 0x38 up to 0x3a; - Update of 06-97-05/0x07 (ADL-S 6+0 K0) microcode (in intel-ucode/06-bf-02) from revision 0x38 up to 0x3a; - Update of 06-bf-02/0x07 (ADL C0) microcode from revision 0x38 up to 0x3a; - Update of 06-bf-05/0x07 (ADL C0) microcode (in intel-ucode/06-bf-02) from revision 0x38 up to 0x3a; - Update of 06-bf-06/0x07 microcode (in intel-ucode/06-bf-02) from revision 0x38 up to 0x3a; - Update of 06-bf-07/0x07 microcode (in intel-ucode/06-bf-02) from revision 0x38 up to 0x3a; - Update of 06-97-02/0x07 (ADL-HX/S 8+8 C0) microcode (in intel-ucode/06-bf-05) from revision 0x38 up to 0x3a; - Update of 06-97-05/0x07 (ADL-S 6+0 K0) microcode (in intel-ucode/06-bf-05) from revision 0x38 up to 0x3a; - Update of 06-bf-02/0x07 (ADL C0) microcode (in intel-ucode/06-bf-05) from revision 0x38 up to 0x3a; - Update of 06-bf-05/0x07 (ADL C0) microcode from revision 0x38 up to 0x3a; - Update of 06-bf-06/0x07 microcode (in intel-ucode/06-bf-05) from revision 0x38 up to 0x3a; - Update of 06-bf-07/0x07 microcode (in intel-ucode/06-bf-05) from revision 0x38 up to 0x3a; - Update of 06-cf-01/0x87 (EMR-SP A0) microcode (in intel-ucode/06-cf-02) from revision 0x21000291 up to 0x210002a9; - Update of 06-cf-02/0x87 (EMR-SP A1) microcode from revision 0x21000291 up to 0x210002a9. - Addresses CVE-2024-28956, CVE-2024-43420, CVE-2024-45332, CVE-2025-20012, CVE-2025-20054, CVE-2025-20103, CVE-2025-20623, CVE-2025-24495

References

Fedora Update Notification FEDORA-2025-e5d3928f2c 2025-06-04 03:33:52.001719+00:00 Name : microcode_ctl Product : Fedora 41 Version : 2.1 Release : 67.2.fc41 URL : https://pagure.io/microcode_ctl Summary : Tool to transform and deploy CPU microcode update for x86 Description : 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 Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-e5d3928f2c' 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

Severity
critical
Lowest
Low
Medium
High
Critical

Name: microcode_ctl
Product: Fedora 41
Version: 2.1
Release: 67.2.fc41
Summary: Tool to transform and deploy CPU microcode update for x86

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