Description (CNA)
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen (if needed) when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbed page.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Xen / Xen | unknown consult Xen advisory XSA-511 |
CWE
No CWE identifiers supplied.
References
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.