CVE-2022-33748

Severity Score

5.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

lock order inversion in transitive grant copy handling As part of XSA-226 a missing cleanup call was inserted on an error handling path. While doing so, locking requirements were not paid attention to. As a result two cooperating guests granting each other transitive grants can cause locks to be acquired nested within one another, but in respectively opposite order. With suitable timing between the involved grant copy operations this may result in the locking up of a CPU.

Inversión del orden de bloqueo en el manejo de la copia de concesión transitiva Como parte de XSA-226 fue insertada una llamada de limpieza que faltaba en una ruta de manejo de errores. Mientras era hecho esto, no fue prestado atención a los requisitos de bloqueo. Como resultado, dos invitados cooperantes que son concedidos mutuamente subvenciones transitivas pueden causar que se adquieran bloqueos anidados uno dentro del otro, pero en el orden opuesto respectivamente. Con una sincronización apropiada entre las operaciones de copia de concesión implicadas, esto puede provocar el bloqueo de una CPU

*Credits: This issue was discovered by Jan Beulich of SUSE.

CVSS Scores

NISTv3.1 5.6

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-06-15 CVE Reserved
2022-10-11 CVE Published
2024-01-16 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-755: Improper Handling of Exceptional Conditions

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2022/10/11/2	2024-02-04
http://xenbits.xen.org/xsa/advisory-411.html	2024-02-04
https://xenbits.xenproject.org/xsa/advisory-411.txt	2024-02-04

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI	2024-02-04
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ	2024-02-04
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE	2024-02-04
https://security.gentoo.org/glsa/202402-07	2024-02-04
https://www.debian.org/security/2022/dsa-5272	2024-02-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				>= 4.0 Search vendor "Xen" for product "Xen" and version " >= 4.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				37 Search vendor "Fedoraproject" for product "Fedora" and version "37"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected