CVE-2026-42492
HIGH
7,5
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Description
AI Translation Available
Xenstore, to have an up-to-date picture of the entire system, wants to
know of domains appearing and disappearing. To make this more robust, a
new XEN_DOMCTL_get_domain_state was introduced. The management of the
bitmap underlying that operation is tied into the binding of the
VIRQ_DOM_EXC virtual IRQ. Unfortunately an error path there would tear
down the bitmap even in cases when it wasn't set up. Unprivileged domains
can trigger that error path.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0048
Percentile
0,4th
Updated
Single Data Point
Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.
459
Incomplete Cleanup
DraftCommon Consequences
Security Scopes Affected:
Other
Confidentiality
Integrity
Potential Impacts:
Other
Read Application Data
Modify Application Data
Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
http://www.openwall.com/lists/oss-security/2026/07/28/13
http://xenbits.xen.org/xsa/advisory-496.html
https://xenbits.xenproject.org/xsa/advisory-496.html