CVE-2022-42322
Xenstore: Cooperating guests can create arbitrary numbers of nodes T[his CNA information record relates to multiple CVEs; the text…
- Published
- Updated
- Reserved
- Assigned by
- XEN
Description
Xenstore: Cooperating guests can create arbitrary numbers of nodes T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Since the fix of XSA-322 any Xenstore node owned by a removed domain will be modified to be owned by Dom0. This will allow two malicious guests working together to create an arbitrary number of Xenstore nodes. This is possible by domain A letting domain B write into domain A's local Xenstore tree. Domain B can then create many nodes and reboot. The nodes created by domain B will now be owned by Dom0. By repeating this process over and over again an arbitrary number of nodes can be created, as Dom0's number of nodes isn't limited by Xenstore quota.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.31% · top 77% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
References (8)
- https://xenbits.xenproject.org/xsa/advisory-419.txt (opens in a new tab)x_transferred
- http://xenbits.xen.org/xsa/advisory-419.html (opens in a new tab)x_transferred
- [oss-security] 20221101 Xen Security Advisory 419 v2 (CVE-2022-42322,CVE-2022-42323) - Xenstore: Cooperating guests can create arbitrary numbers of nodes (opens in a new tab)mailing-listx_transferred
- DSA-5272 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-07438e12df (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-99af00f60e (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-9f51d13fa3 (opens in a new tab)vendor-advisoryx_transferred
- GLSA-202402-07 (opens in a new tab)vendor-advisoryx_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-2022-42322)Record last updated .