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.
Published 2022-01-25 14:15:09
Updated 2022-08-19 09:59:20
Source Xen Project
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Exploit prediction scoring system (EPSS) score for CVE-2022-23035

0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 35 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-23035

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.7
MEDIUM AV:L/AC:M/Au:N/C:N/I:N/A:C
3.4
6.9
NIST
4.6
MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.9
3.6
NIST

CWE ids for CVE-2022-23035

  • The product does not properly "clean up" and remove temporary or supporting resources after they have been used.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-23035

Products affected by CVE-2022-23035

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