Description
Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious microcode, potentially resulting in loss of integrity of x86 instruction execution, loss of confidentiality and integrity of data in x86 CPU privileged context and compromise of SMM execution environment.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AMD | AMD EPYC™ 7001 Series | — | NaplesPI 1.0.0.P |
| AMD | AMD EPYC™ 7002 Series | — | RomePI 1.0.0.L |
| AMD | AMD EPYC™ 7003 Series | — | MilanPI 1.0.0.F |
| AMD | AMD EPYC™ 9004 Series | — | Genoa 1.0.0.E |
| AMD | AMD EPYC™ 4004 Series | — | ComboAM5PI1.0.0.a |
| AMD | AMD EPYC™ 9005 Series | — | TurinPI 1.0.0.4 |
| AMD | AMD Instinct™ MI300A | — | MI300PI_SR5 1.0.0.8 |
| AMD | AMD Ryzen™ 5000 Series Desktop Processors | — | ComboAM4v2PI 1.2.0.E |
| AMD | AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics | — | ComboAM4v2PI 1.2.0.E |
| AMD | AMD Ryzen™ 3000 Series Desktop Processors | — | ComboAM4PI 1.0.0.D |
| AMD | AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics | — | ComboAM4PI 1.0.0.D |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | — | ComboAM5PI 1.0.0.a |
| AMD | AMD Ryzen™ 4000 Series Desktop Processor with Radeon™ Graphics | — | ComboAM4v2PI 1.2.0.E |
| AMD | AMD Ryzen™ 8000 Series Processor with Radeon™ Graphics | — | ComboAM5PI 1.1.0.3c |
| AMD | AMD Ryzen™ 9000 Series Desktop Processors | — | ComboAM5PI 1.2.0.3c |
| AMD | AMD Ryzen™ Threadripper™ 3000 Series Processors | — | CastlePeakPI-SP3r3 1.0.0.E |
| AMD | AMD Ryzen™ Threadripper™ PRO 7000 WX-Series Processors | — | StormPeakPI-SP6 1.0.0.1k |
| AMD | AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors | — | ChagallWSPI-sWRX8 1.0.0.B |
| AMD | AMD Ryzen™ Threadripper™ PRO 5000WX- Series Desktop Processors | — | ChagallWSPI-sWRX8 1.0.0.B |
| AMD | AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics | — | PicassoPI-FP5 1.0.1.2b |
| AMD | AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics | — | PicassoPI-FP5 1.0.1.2b |
| AMD | AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics | — | RenoirPI-FP6 1.0.0.Eb |
| AMD | AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics | — | CezannePI-FP6 1.0.1.1b |
| AMD | AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics | — | MendocinoPI-FT6 1.0.0.7b |
| AMD | AMD Ryzen™ 6000 Series Processor with Radeon™ Graphics | — | RembrandtPI-FP7 1.0.0.Bb |
| AMD | AMD Ryzen™ 7035 Series Processor with Radeon™ Graphics | — | RembrandtPI-FP7 1.0.0.Bb |
| AMD | AMD Ryzen™ 7000 Series Processors with Radeon™ Graphics | — | CezannePI-FP6 1.0.1.1b |
| AMD | AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics | — | PhoenixPI-FP8-FP7 1.2.0.0 |
| AMD | AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics | — | PhoenixPI-FP8-FP7 1.2.0.0 |
| AMD | AMD Ryzen™ 7045 Series Mobile Processors | — | DragonRangeFL1 1.0.0.3g |
| AMD | AMD Ryzen™ AI 300 Series | — | StrixKrakenPI-FP8_1.1.0.0b |
| AMD | AMD Ryzen™ AI Max + | — | StrixHaloPI-FP11_1.0.0.1 |
| AMD | AMD Ryzen™ 9000HX Series Mobile Processors | — | FireRangeFL1PI 1.0.0.0a |
| AMD | AMD EPYC™ Embedded 3000 | — | SnowyOwl PI 1.1.0.E |
| AMD | AMD EPYC™ Embedded 7002 | — | EmbRomePI-SP3 1.0.0.D |
| AMD | AMD EPYC™ Embedded 7003 | — | EmbMilan PI-SP3 1.0.0.A |
| AMD | AMD EPYC™ Embedded 8004 | — | EmbGenoaPI-SP5 1.0.0.9 |
| AMD | AMD EPYC™ Embedded 9004 | — | EmbGenoaPI-SP5 1.0.0.9 |
| AMD | AMD EPYC™ Embedded 97X4 | — | EmbGenoaPI-SP5 1.0.0.9 |
| AMD | AMD Ryzen™ Embedded R1000 | — | EmbeddedPI-FP5 1.2.0.F |
| AMD | AMD Ryzen™ Embedded R2000 | — | EmbeddedR2KPI 1.0.0.5 |
| AMD | AMD Ryzen™ Embedded 5000 | — | EmbAM4PI 1.0.0.7 |
| AMD | AMD Ryzen™ Embedded 7000 | — | EmbeddedAM5PI 1.0.0.3 |
| AMD | AMD Ryzen™ Embedded V1000 | — | EmbeddedPI-FP5 1.2.0.F |
| AMD | AMD Ryzen™Embedded V2000 | — | EmbeddedPI-FP6 1.0.0.B |
| AMD | AMD Ryzen™Embedded V3000 | — | EmbeddedPI-FP7R2 1.0.0.C |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 24.04 LTS | linux-bluefield | 6.8.0-1017.21 | — |
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu 26.10 | amd64-microcode | No fix yet | — |
| Ubuntu 26.04 LTS | amd64-microcode | No fix yet | — |
| Ubuntu 25.10 | amd64-microcode +1 | No fix yet | — |
| Ubuntu 25.10 | linux | 6.17.0-22.22 | USN-8177-1 |
| Ubuntu 25.10 | linux-aws +1 | 6.17.0-1012.12 | USN-8183-2, USN-8183-1 |
| Ubuntu 25.10 | linux-azure +1 | 6.17.0-1013.13 | USN-8245-1 |
| Ubuntu 25.10 | linux-oracle | 6.17.0-1011.11 | USN-8183-2 |
| Ubuntu 25.10 | linux-realtime | 6.17.0-1010.11 | USN-8177-1 |
| Ubuntu 25.10 | linux-riscv | 6.17.0-22.22.1 | — |
Show 21 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux | 6.8.0-110.110 | USN-8179-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1052.55 | USN-8179-1 |
| Ubuntu 24.04 LTS | linux-aws-6.17 +1 | 6.17.0-1012.12~24.04.1 | USN-8183-2, USN-8183-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1054.60 | USN-8258-1 |
| Ubuntu 24.04 LTS | linux-azure-6.17 | 6.17.0-1013.13~24.04.1 | USN-8245-1 |
| Ubuntu 24.04 LTS | linux-azure-fde | 6.8.0-1058.65 | — |
| Ubuntu 24.04 LTS | linux-azure-nvidia | 6.8.0-1039.42 | — |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1054.57 | USN-8179-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1050.56 | USN-8179-1 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1037.40 | USN-8179-1 |
| Ubuntu 24.04 LTS | linux-hwe-6.17 | 6.17.0-22.22~24.04.1 | USN-8183-2 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1051.51 | USN-8179-1 |
| Ubuntu 24.04 LTS | linux-intel +18 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-lowlatency | 6.8.0-110.110.1 | USN-8179-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1051.54 | USN-8185-1 |
| Ubuntu 24.04 LTS | linux-nvidia-6.17 | 6.17.0-1018.18 | — |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1051.54.1 | USN-8185-2 |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | 6.8.0-1022.22 | USN-8265-1 |
| Ubuntu 24.04 LTS | linux-oem-6.17 | 6.17.0-1020.20 | USN-8245-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1049.50 | USN-8203-1 |
| Ubuntu 24.04 LTS | linux-oracle-6.17 | 6.17.0-1011.11~24.04.1 | USN-8183-2 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1052.56 | USN-8179-3 |
| Ubuntu 24.04 LTS | linux-riscv-6.17 | 6.17.0-22.22.1~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-xilinx | 6.8.0-1028.29 | USN-8261-1 |
| Ubuntu 22.04 LTS | linux +50 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1052.55~22.04.1 | USN-8179-1 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1059.65~22.04.1 | USN-8440-1 |
| Ubuntu 22.04 LTS | linux-azure-fde-6.8 | 6.8.0-1058.65~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1054.57~22.04.1 | USN-8179-4 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 +1 | 6.8.0-110.110~22.04.1 | USN-8179-3 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 | 6.8.0-1051.51~22.04.1 | USN-8179-3 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | 6.8.0-110.110.1~22.04.1 | USN-8179-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1051.54~22.04.1 | USN-8185-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1049.50~22.04.1 | USN-8203-1 |
| Ubuntu 20.04 LTS | linux-gke +29 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 14.04 LTS | amd64-microcode | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2042.43 | USN-8204-1 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1047.48 | USN-8184-1 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.17 | 6.17.0-1010.11~24.04.1 | USN-8177-2 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1047.48~22.04.1 | USN-8184-1 |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-aws-fips | 6.8.0-1052.55+fips1 | USN-8179-2 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-azure-fips | 6.8.0-1053.59+fips1 | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-110.110+fips2 | USN-8179-2 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-gcp-fips | 6.8.0-1054.57+fips1 | USN-8179-2 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +21 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +13 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +8 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux +3 | No fix yet | — |
Advisories 19
- USN-8440-1 linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8179-1 linux, linux-aws, linux-aws-6.8, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8183-2 linux-aws, linux-aws-6.17, linux-hwe-6.17, linux-oracle, linux-oracle-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8203-1 linux-oracle, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8184-1 linux-realtime, linux-realtime-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8204-1 linux-raspi-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8185-1 linux-nvidia, linux-nvidia-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8185-2 linux-nvidia-lowlatency vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8179-3 linux-hwe-6.8, linux-ibm-6.8, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8265-1 linux-nvidia-tegra vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8258-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8179-4 linux-gcp-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8183-1 linux-gcp, linux-gcp-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8245-1 linux-azure, linux-azure-6.17, linux-oem-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8177-2 linux-realtime-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8179-2 linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8177-1 linux, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8261-1 linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- WID-SEC-2025-0492 AMD EPYC Prozessoren: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · May 12, 2025