gnttab: cache-flush handling may cause page reference leak
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.)
CVE-2026-102700
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-102700
Xen
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Xen",
"product": "Xen",
"versions": [
{
"status": "unknown",
"version": "consult Xen advisory XSA-520"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-102700
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #42396 · Revision 1
- Added to Heist Feed
- Publisher date