CVE Explorer
CVE-2026-42490
[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]
To create and manage guests, domctl operations are used by the control
domain, a possible Xenstore domain, or by a domain controlling a
particular guest. Some of these operations may not be executed in
parallel, so a system-wide lock is used. The way that lock is acquired
is, however, not providing any fairness. This is CVE-2026-42489.
Furthermore, with XSM/Flask
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","product":"Xen","vendor":"Xen","versions":[{"status":"unknown","version":"consult Xen advisory XSA-492"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f62bf1df5429ab4d37c00b089021fee4755282b2171c414bd89f7ed4ac56f3e2 · sha256:483c76f6f3e06ad6… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f62bf1df5429ab4d37c00b089021fee4755282b2171c414bd89f7ed4ac56f3e2 · sha256:483c76f6f3e06ad6… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-667","description":"CWE-667 Improper Locking","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f62bf1df5429ab4d37c00b089021fee4755282b2171c414bd89f7ed4ac56f3e2 · sha256:483c76f6f3e06ad6… · /containers/adp/0/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://xenbits.xenproject.org/xsa/advisory-492.html"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f62bf1df5429ab4d37c00b089021fee4755282b2171c414bd89f7ed4ac56f3e2 · sha256:483c76f6f3e06ad6… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.