Vulnerability · Published Nov 1, 2022 · Assigned by XEN
CVE-2022-42310
Medium 5.5
In plain English
A medium-severity security flaw in xen from Xen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 78.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Xenstore: Guests can create orphaned Xenstore nodes By creating multiple nodes inside a transaction resulting in an error, a malicious guest can create orphaned nodes in the Xenstore data base, as the cleanup after the error will not remove all nodes already created. When the transaction is committed after this situation, nodes without a valid parent can be made permanent in the data base.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | xen | 4.17.0-r0 | ALPINE-CVE-2022-42310 |
| Alpine:v3.21 | xen | 4.17.0-r0 | ALPINE-CVE-2022-42310 |
| Alpine:v3.22 | xen | 4.17.0-r0 | ALPINE-CVE-2022-42310 |
| Alpine:v3.23 | xen | 4.17.0-r0 | ALPINE-CVE-2022-42310 |
| Alpine:v3.24 | xen | 4.17.0-r0 | ALPINE-CVE-2022-42310 |
| Debian:12 | xen | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42310 |
| Debian:13 | xen | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42310 |
| Debian:14 | xen | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42310 |
| Ubuntu:22.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-42310 |
| Ubuntu:24.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-42310 |
| Ubuntu:25.10 | xen | no fix listed | UBUNTU-CVE-2022-42310 |
| Ubuntu:26.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-42310 |
| Ubuntu:26.10 | xen | no fix listed | UBUNTU-CVE-2022-42310 |
Affected products (as reported)
References
- https://xenbits.xenproject.org/xsa/advisory-415.txt
- http://xenbits.xen.org/xsa/advisory-415.html
- [oss-security] 20221101 Xen Security Advisory 415 v2 (CVE-2022-42310) - Xenstore: Guests can create orphaned Xenstore nodes mailing-list
- DSA-5272 vendor-advisory
- FEDORA-2022-07438e12df vendor-advisory
- FEDORA-2022-99af00f60e vendor-advisory
- FEDORA-2022-9f51d13fa3 vendor-advisory
- GLSA-202402-07 vendor-advisory