CVE-2026-102704
Full vulnerability record from the local CVENow database.
Description
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] A common access pattern is a batch of Grant Copy operations acting on adjacent address ranges in the same source or destination page. For performance reasons, Xen caches details internally to reuse already validated data. The conditions on when to re-validate the internal data were not correct in some cases: - Frame numbers and grant references could wrongly be mixed up. This is CVE-2026-102703. - Copying by frame number (rather than grant reference) is permitted only when operating on the caller's own memory. The check to enforce this restriction was misplaced. This is CVE-2026-102704.
View original CVE JSON
{
"id": "CVE-2026-102704",
"sourceIdentifier": "[email protected]",
"published": "2026-11-04T11:17:07.303",
"lastModified": "2026-11-04T11:17:07.303",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nA common access pattern is a batch of Grant Copy operations acting on\nadjacent address ranges in the same source or destination page. For\nperformance reasons, Xen caches details internally to reuse already\nvalidated data. The conditions on when to re-validate the internal data\nwere not correct in some cases:\n\n - Frame numbers and grant references could wrongly be mixed up. This\n is CVE-2026-102703.\n\n - Copying by frame number (rather than grant reference) is permitted\n only when operating on the caller's own memory. The check to enforce\n this restriction was misplaced. This is CVE-2026-102704."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Xen",
"product": "Xen",
"defaultStatus": "unknown",
"versions": [
{
"version": "consult Xen advisory XSA-523",
"status": "unknown"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://xenbits.xenproject.org/xsa/advisory-523.html",
"source": "[email protected]"
}
]
}