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nvd416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2021-46918
HistoryFeb 27, 2024 - 7:15 a.m.

CVE-2021-46918

2024-02-2707:15:08
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
linux kernel
dmaengine
idxd
msix
permission entries
shutdown
cve-2021-46918

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

5.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: idxd: clear MSIX permission entry on shutdown

Add disabling/clearing of MSIX permission entries on device shutdown to
mirror the enabling of the MSIX entries on probe. Current code left the
MSIX enabled and the pasid entries still programmed at device shutdown.

Affected configurations

NVD
Node
linuxlinux_kernelRange5.11.05.11.16

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

5.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%