CVE-2022-33748

 

Published at: - 11-10-2022 03:15

Last modified: - 17-11-2022 04:15

Total changes: - 5

Description

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://xenbits.xenproject.org/xsa/advisory-411.txt
• http://xenbits.xen.org/xsa/advisory-411.html
• [oss-security] 20221011 Xen Security Advisory 411 v3 (CVE-2022-33748) - lock order inversion in transitive grant copy handling-Mailing List, Mitigation, Patch, Third Party Advisory
• FEDORA-2022-5b594b82ac-
• DSA-5272-
• FEDORA-2022-d80cc73088-
• FEDORA-2022-99af00f60e-

 

Keywords

NVD

 

CVE-2022-33748

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures