CVE-2022-23035

Advisory lineage Upstream: 0 Downstream: 15
Modified
Published: 25 Jan 2022, 13:46
Last modified:03 Aug 2024, 03:28

Vulnerability Summary

Overall Risk (default)
low
19/100
CVSS Score
4.7 MEDIUM
v2.0 (nvd)
EPSS Score
0.11% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Jan 2022, 13:46
Published
Vulnerability first disclosed
03 Aug 2024, 03:28
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.6CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.7AV:L/AC:M/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.11%• Percentile: 30%

Techniques & Countermeasures

  • CWE-459•Incomplete Cleanup

    The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

Affected Systems

  • debian•debian_linux

    11.0

  • fedoraproject•fedora

    34

  • xen•xen

    ≥ 4.6.0

References (5)