CVE-2022-42334

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).

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.0 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
http://www.openwall.com/lists/oss-security/2023/03/21/2	Mailing List Third Party Advisory
http://xenbits.xen.org/xsa/advisory-428.html	Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202402-07
https://www.debian.org/security/2023/dsa-5378	Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-428.txt	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:11.0:::::::*
	cpe:2.3:o:fedoraproject:fedora:37:::::::*
	cpe:2.3:o:fedoraproject:fedora:38:::::::*

History

No history.

Information

Published : 2023-03-21 13:15

Updated : 2024-02-04 08:15

NVD link : CVE-2022-42334

Mitre link : CVE-2022-42334

CVE.ORG link : CVE-2022-42334

JSON object : View

Products Affected

xen

xen

fedoraproject

fedora

debian

debian_linux

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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