CVE-2026-102700
gnttab: cache-flush handling may cause page reference leak
- State
- Published
- Severity
- 4.7 Medium
- Published
- Oct 13, 2026
- Updated
- Oct 20, 2026
- Reserved
- Sep 29, 2026
Description
With its original introduction, GNTTAB_cache_flush was made available uniformly. XSA-232 (CVE-2017-14318) then covered an omitted NULL pointer check, yet the addition of that check failed to adjust the subsequent error path. That error path fails to drop a page reference in case the specified page is owned by a special system domain (DOM_IO and DOM_COW are system domains which can have memory pages assigned to them.)
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.7 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-404 Improper Resource Shutdown or Release
Affected Products
| Product | Versions |
|---|---|
XenXen |
|
References
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