CVE-2026-31628

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

24/04/2026

Last modified:

27/04/2026

Description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU: Fix FPDSS on Zen1 Zen1&#39;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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	3.16.58 (including)	3.17 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.4.144 (including)	4.5 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.9.102 (including)	4.10 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.14.1 (including)	5.10.253 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.203 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.169 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.135 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.82 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.18.23 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.19 (including)	6.19.13 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	7.0 (including)	7.0.1 (excluding)
cpe:2.3:o:linux:linux_kernel:4.14:-::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-31628

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools