USN-7848-1: AMD Microcode vulnerabilities
Publication date
29 October 2025
Overview
Several security issues were fixed in AMD Microcode.
Releases
Packages
- amd64-microcode - Platform firmware and microcode for AMD CPUs and SoCs
Details
Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Köpf, Stavros Volos,
and Flavien Solt discovered that some AMD processors may allow an attacker
to infer data from previous stores. A local attacker could possibly use
this issue to expose sensitive information. This update provides the
updated microcode mitigations required for the corresponding Linux kernel
update.
Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Köpf, Stavros Volos,
and Flavien Solt discovered that some AMD processors may allow an attacker
to infer data from previous stores. A local attacker could possibly use
this issue to expose sensitive information. This update provides the
updated microcode mitigations required for the corresponding Linux kernel
update.
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 – 3.20250708.0ubuntu0.25.04.2 | ||
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