grant table v2 race in status page mapping
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Xen | Xen | unknown |
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Xen | Xen |
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Vendor Workaround
Using the "gnttab=max-ver:1" hypervisor command line option will avoid the vulnerability. Using the "max_grant_version=1" guest configuration option for HVM and PVH guests will also avoid the vulnerability.
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4818-1 | xen security update |
Debian DSA |
DSA-6424-1 | xen security update |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.117% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-362 | |
| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Xen
Xen xen |
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| Vendors & Products |
Xen
Xen xen |
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | grant table v2 race in status page mapping | |
| References |
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