MGASA-2023-0244

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Source
https://advisories.mageia.org/MGASA-2023-0244.html
Import Source
https://advisories.mageia.org/MGASA-2023-0244.json
JSON Data
https://api.osv.dev/v1/vulns/MGASA-2023-0244
Related
Published
2023-07-26T22:07:49Z
Modified
2023-07-26T20:58:12Z
Summary
Updated microcode packages fix security vulnerability
Details

Under specific microarchitectural circumstances, a register in "Zen 2" CPUs may not be written to 0 correctly. This may cause data from another process and/or thread to be stored in the YMM register, which may allow an attacker to potentially access sensitive information (CVE-2023-20593, also known as Zenbleed).

This update adds the microcode for Amd Epyc gen 2 cpus. Other Zen 2 based CPUs will get their microcode update at a later time when Amd has fixed and validated the microcodes, see the referenced Amd url that has info about estimated timelines for various CPUs.

References
Credits

Affected packages

Mageia:8 / microcode

Package

Name
microcode
Purl
pkg:rpm/mageia/microcode?distro=mageia-8

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.20230613-2.mga8.nonfree

Ecosystem specific 

{
    "section": "nonfree"
}