CVE-2022-42334

2023-03-2113:15:12

CWE-770

[email protected]

web.nvd.nist.gov

cve-2022-42333

cve-2022-42334

information security

cache control

privileged entities

dom0

stub-domain

nvd

6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

51.8%

JSON

x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To allow cachability control for HVM guests with passed through devices, an interface exists to explicitly override defaults which would otherwise be put in place. While not exposed to the affected guests themselves, the interface specifically exists for domains controlling such guests. This interface may therefore be used by not fully privileged entities, e.g. qemu running deprivileged in Dom0 or qemu running in a so called stub-domain. With this exposure it is an issue that - the number of the such controlled regions was unbounded (CVE-2022-42333), - installation and removal of such regions was not properly serialized (CVE-2022-42334).

Affected configurations

NVD

Node

xenxenRange4.11.0–4.17.0x86

Node

debiandebian_linuxMatch11.0

fedoraprojectfedoraMatch37

fedoraprojectfedoraMatch38

CPENameOperatorVersion
xen:xenxenle4.17.0

CPE	Name	Operator	Version
xen:xen	xen	le	4.17.0

CNA Affected

[
  {
    "vendor": "Xen",
    "product": "xen",
    "versions": [
      {
        "version": "consult Xen advisory XSA-428",
        "status": "unknown"
      }
    ]
  }
]