{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "57a9a117154c93539e33161dd318e6aeb8c04efa"
            },
            {
              "fixed": "1716b7fea2ead941a0dfac06c4504a3437cdf00d"
            },
            {
              "fixed": "dab9f93251b2c86a033de6098d0c73afddd55d4a"
            },
            {
              "fixed": "b94538186a3eae3763b8f96dacd610920a865aa7"
            },
            {
              "fixed": "0680f511926589206f81f57f76ce131d7741a316"
            },
            {
              "fixed": "8bcd15b690a390241179516af1b6ae49ebfd9d95"
            },
            {
              "fixed": "9ce754ed8e7ab4e3999767ce1505f85c449ccb07"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.12.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.142"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.92"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64106.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits\n\nUserspace can restore an ITS Device Table Entry whose Size field encodes\nmore EventID bits than the virtual ITS supports.  The live MAPD path\nrejects that state, but vgic_its_restore_dte() accepts it and stores the\nout-of-range value in dev-\u003enum_eventid_bits.\n\nReject restored DTEs with num_eventid_bits \u003e VITS_TYPER_IDBITS before\nallocating the device.  This mirrors the MAPD check and prevents the\nrestored state from reaching vgic_its_restore_itt(), where the unchecked\nvalue can be converted into an oversized scan_its_table() range.",
  "id": "CVE-2026-64106",
  "modified": "2026-07-21T03:42:05.447979147Z",
  "published": "2026-07-19T15:40:09.344Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0680f511926589206f81f57f76ce131d7741a316"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1716b7fea2ead941a0dfac06c4504a3437cdf00d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bcd15b690a390241179516af1b6ae49ebfd9d95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ce754ed8e7ab4e3999767ce1505f85c449ccb07"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b94538186a3eae3763b8f96dacd610920a865aa7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dab9f93251b2c86a033de6098d0c73afddd55d4a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64106.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64106"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits"
}