When grant-copy operations are processed, the respective grant may or may
not already be in use by another operation (a mapping or another copy).
For all copy operations the referenced guest frame is looked up. When
another operation is already active for the grant (the grant is "pinned"),
what is being supplied back to actually carry out permission checks and
copy operation may not be consistent: The permission check may be carried
out on a page different from the one involved in the copy.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://xenbits.xenproject.org/xsa/advisory-500.html |
|
History
Wed, 29 Jul 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Xen
Xen xen |
|
| Vendors & Products |
Xen
Xen xen |
Tue, 28 Jul 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | When grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant is "pinned"), what is being supplied back to actually carry out permission checks and copy operation may not be consistent: The permission check may be carried out on a page different from the one involved in the copy. | |
| Title | grant-table: type confusion in grant-copy | |
| Weaknesses | CWE-367 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: XEN
Published:
Updated: 2026-07-28T16:33:28.183Z
Reserved: 2026-07-14T10:28:12.655Z
Link: CVE-2026-62428
Updated: 2026-07-28T16:33:28.183Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-29T00:00:08Z