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Ubuntu 25.04 USN-7560-1: Critical AMD Microcode Integrity Risk

ubuntu
Calendar Grey June 9, 2025
Dist Ubuntu Esm H88
Intel firmware release enhances SGX security protocols. Discover the solution for Fedora 36 that impacts privacy and trustworthiness.
AMD Microcode could lose the SEV-based protection of a confidential guest.

Summary

AMD Microcode could lose the SEV-based protection of a confidential guest.

Software Description:

- 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.

Topics%20covered

Topics Covered

security advisory local privilege ubuntu confidentiality integrity amd64-microcode

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.04
  amd64-microcode                 3.20250311.1ubuntu0.25.04.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7560-1

CVE-2024-56161

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7560-1

Topics%20covered

Topics Covered

security advisory local privilege ubuntu confidentiality integrity amd64-microcode

Package Information

https://launchpad.net/ubuntu/+source/amd64-microcode/3.20250311.1ubuntu0.25.04.1

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