CVE-2022-23035
Insufficient cleanup of passed-through device IRQs The management of IRQs associated with physical devices exposed to x86 HVM guests…
- Published
- Updated
- Reserved
- Assigned by
- XEN
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.
Timeline
ID reserved
By XEN
- 15 days later
· 15 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.35% · top 71% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.6.
Weakness
Affected products
References (5)
- https://xenbits.xenproject.org/xsa/advisory-395.txt (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20220125 Xen Security Advisory 395 v2 (CVE-2022-23035) - Insufficient cleanup of passed-through device IRQs (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2022-0cc3916e08 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- DSA-5117 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- GLSA-202208-23 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-23035)Record last updated .