CVE-2026-31628

CVE Details

Release Date:	2026-04-24
Impact:	Moderate	What is this?

Description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU: Fix FPDSS on Zen1 Zen1's hardware divider can leave, under certain circumstances, partial results from previous operations. Those results can be leaked by another, attacker thread. Fix that with a chicken bit.

See more information about CVE-2026-31628 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2026-50262	2026-05-10
Oracle Linux version 8 (kernel-uek)	ELSA-2026-50261	2026-05-10
Oracle Linux version 8 (kernel-uek)	ELSA-2026-50262	2026-05-10
Oracle Linux version 9 (kernel-uek)	ELSA-2026-50261	2026-05-10