CVE-2022-23035

 

Published at: - 25-01-2022 03:15

Last modified: - 19-08-2022 11:59

Total changes: - 8

Description

Insufficient cleanup of passed-through device IRQs The management of IRQs associated with physical devices exposed to x86 HVM guests involves an iterative operation in particular when cleaning up after the guest's use of the device. In the case where an interrupt is not quiescent yet at the time this cleanup gets invoked, the cleanup attempt may be scheduled to be retried. When multiple interrupts are involved, this scheduling of a retry may get erroneously skipped. At the same time pointers may get cleared (resulting in a de-reference of NULL) and freed (resulting in a use-after-free), while other code would continue to assume them to be valid.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://xenbits.xenproject.org/xsa/advisory-395.txt
• [oss-security] 20220125 Xen Security Advisory 395 v2 (CVE-2022-23035) - Insufficient cleanup of passed-through device IRQs-Mailing List, Patch, Third Party Advisory
• FEDORA-2022-0cc3916e08-Mailing List, Third Party Advisory
• DSA-5117-Third Party Advisory
• GLSA-202208-23-Third Party Advisory

 

Keywords

NVD

 

CVE-2022-23035

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures