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[email protected]CVE-2022-26357

HistoryApr 05, 2022 - 1:15 p.m.

CVE-2022-26357

2022-04-0513:15:07

CWE-362

[email protected]

web.nvd.nist.gov

cve-2022-26357

vt-d

xen

domain id

race

security

vulnerability

nvd

6.2 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:H/Au:N/C:C/I:C/A:C

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.9 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%

JSON

race in VT-d domain ID cleanup Xen domain IDs are up to 15 bits wide. VT-d hardware may allow for only less than 15 bits to hold a domain ID associating a physical device with a particular domain. Therefore internally Xen domain IDs are mapped to the smaller value range. The cleaning up of the housekeeping structures has a race, allowing for VT-d domain IDs to be leaked and flushes to be bypassed.

Affected configurations

NVD

Node

xenxenRange4.11.0–4.12.0

xenxenRange4.13.0–4.16.0

Node

debiandebian_linuxMatch11.0

Node

fedoraprojectfedoraMatch34

fedoraprojectfedoraMatch35

CPENameOperatorVersion
xen:xenxenlt4.12.0
xen:xenxenlt4.16.0

CPE	Name	Operator	Version
xen:xen	xen	lt	4.12.0
xen:xen	xen	lt	4.16.0

CNA Affected

[
  {
    "vendor": "Xen",
    "product": "xen",
    "versions": [
      {
        "version": "consult Xen advisory XSA-399",
        "status": "unknown"
      }
    ]
  }
]