CVEvulnerability

CVE-2022-23035

4.6 MEDIUM Published 2022-01-25 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-01-25
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.6 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.7 MEDIUM — AV:L/AC:M/Au:N/C:N/I:N/A:C
Weaknesses
CWE-459

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.

Affected configurations

• xen xen (>= 4.6.0) • fedoraproject fedora 34 • debian debian linux 11.0

Related

Weakness · CWE (1)

  • CWE-459 Incomplete Cleanup weakness

References