CVSS 3.1
7.9 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:HCVE-2026-42487
HVM guest I/O port accesses are subject to either emulation or at least
translation. Translations are managed by the device model (via
XEN_DOMCTL_ioport_mapping), and hence the linked list used may changed
at any time. Traversal of those lists (while handling guest I/O port
accesses) therefore needs synchronizing with updates, which was missing
so far.
Severity
- EPSS
- 0.10% chance of exploitation in the next 30 days; higher than 0% of CVEs (scores of 2026-10-31)
- CWE
- CWE-362
- Published
- Modified
- Record from
- the NVD, synced