PT-2026-34980 · Amd+3 · Zen1+3
CVE-2026-31628
·
Published
2026-04-07
·
Updated
2026-09-09
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
On Zen1 processors, the hardware divider may retain partial results from previous operations under certain conditions. This behavior allows another attacker-controlled thread to leak these residual results. This issue is known as Floating Point Data Sampling (FPDSS), a side-channel attack where data is leaked from internal CPU buffers.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu
Zen1