https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-08T09:07:41.938835+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2026-23558 CVE-2026-23558 — grant table v2 race in status page mapping 2026-10-08T09:07:41.955257+00:00

Affected: Xen

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.