{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "85dd2c8ff368b1446be9febde84afe1d7aec4261"
            },
            {
              "fixed": "00efe58bbdcc93272d579ca24bfc912563f4a204"
            },
            {
              "fixed": "96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9"
            },
            {
              "fixed": "afeb32d9bf9aaeea51d0f723a19f14afb73bd94d"
            },
            {
              "fixed": "f48b9157f0f611fa436c360648603d5ded719b12"
            },
            {
              "fixed": "0ef37eef83fad3542ee06db2940433ae1a92b39d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.3.0"
            },
            {
              "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-2026-64217.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix overrun check in netfs_extract_user_iter()\n\nFix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills\npages[], then those pages don't get included in the iterator constructed at\nthe end of the function.  If there was an overfill, memory corruption has\nalready happened.",
  "id": "CVE-2026-64217",
  "modified": "2026-07-28T03:55:47.659285301Z",
  "published": "2026-07-24T15:23:05.261Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00efe58bbdcc93272d579ca24bfc912563f4a204"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ef37eef83fad3542ee06db2940433ae1a92b39d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afeb32d9bf9aaeea51d0f723a19f14afb73bd94d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f48b9157f0f611fa436c360648603d5ded719b12"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64217.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64217"
    },
    {
      "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:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "netfs: Fix overrun check in netfs_extract_user_iter()"
}