CVE-2026-102700

Full vulnerability record from the local CVENow database.

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.)

Severity

MEDIUM

CVSS score

4.7 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-10-13 16:17:09.623000

Last modified

2026-10-20 18:17:16.277000

View original CVE JSON

{
  "id": "CVE-2026-102700",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-13T16:17:09.623",
  "lastModified": "2026-10-20T18:17:16.277",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "With its original introduction, GNTTAB_cache_flush was made available\nuniformly.  XSA-232 (CVE-2017-14318) then covered an omitted NULL\npointer check, yet the addition of that check failed to adjust the\nsubsequent error path.  That error path fails to drop a page reference in\ncase the specified page is owned by a special system domain (DOM_IO and\nDOM_COW are system domains which can have memory pages assigned to them.)"
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Xen",
          "product": "Xen",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "consult Xen advisory XSA-520",
              "status": "unknown"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-20T17:15:12.175287Z",
          "id": "CVE-2026-102700",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-404"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://xenbits.xenproject.org/xsa/advisory-520.html",
      "source": "[email protected]"
    },
    {
      "url": "http://xenbits.xen.org/xsa/advisory-520.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}