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.
Details
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| xen | — | — |
References
Similar Threats
- Unknown ALPINE-CVE-2021-26401
- Unknown ALPINE-CVE-2021-28703
- Unknown ALPINE-CVE-2021-28706
- Unknown ALPINE-CVE-2021-28704
- Unknown ALPINE-CVE-2021-28705
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