CVE-2021-46918

2024-02-2718:02:10

redhat.com

access.redhat.com

linux kernel

msix enabled

pasid entries

device shutdown

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

7.3 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.0%

JSON

A flaw was found in the Linux Kernel. The current code leaves the MSIX enabled and the pasid entries still programmed at device shutdown. Add disabling/clearing of MSIX permission entries on device shutdown to mirror the enabling of the MSIX entries on probe.