USN-7560-1: AMD Microcode vulnerability
Publication date
9 June 2025
Overview
AMD Microcode could lose the SEV-based protection of a confidential guest.
Releases
Packages
- amd64-microcode - Platform firmware and microcode for AMD CPUs and SoCs
Details
Josh Eads, Kristoffer Janke, Eduardo Nava, Tavis Ormandy and Matteo Rizzo
discovered that AMD Microcode incorrectly verified signatures. An attacker
with local administrator privilege could possibly use this issue to cause
loss of confidentiality and integrity of a confidential guest running under
AMD SEV-SNP.
Josh Eads, Kristoffer Janke, Eduardo Nava, Tavis Ormandy and Matteo Rizzo
discovered that AMD Microcode incorrectly verified signatures. An attacker
with local administrator privilege could possibly use this issue to cause
loss of confidentiality and integrity of a confidential guest running under
AMD SEV-SNP.
Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 25.04 plucky | amd64-microcode – 3.20250311.1ubuntu0.25.04.1 | ||
Reduce your security exposure
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