Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2022-33748

Disclosure Date: October 11, 2022
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
5.6 Medium
Impact Score:
4
Exploitability Score:
1.1
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
High
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Vendors

  • debian,
  • fedoraproject,
  • xen

Products

  • debian linux 11.0,
  • fedora 35,
  • fedora 36,
  • fedora 37,
  • xen
Technical Analysis