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CVE-2026-23558

7.8 HIGH

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a ...

Published: 2026-05-19 · Last updated: 2026-05-19

Severity and scoring

CVSS
7.8 HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
CWE-362

Affected products

VendorProduct
xenxen

Description

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status page(s) via XENMEM_add_to_physmap. Some of the status pages may then be freed while mappings of them would still be inserted into the guest's secondary (P2M) page tables.

Source: NVD

References

Related CVEs

Same vendor

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