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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
5
linux kernel
dmaengine
idxd
msix
permission entries
shutdown
cve-2021-46918

CVSS3

5.5

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

AI Score

5.5

Confidence

High

EPSS

0

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
VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS3

5.5

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

AI Score

5.5

Confidence

High

EPSS

0

Percentile

9.0%