netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

{
  "id": "1378c6f6701e779094aee6b4f0890cc934d9d8aa26a4764b8358ed8a3f0c0b47",
  "url": "https://osv.dev/vulnerability/CVE-2026-64160",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "netfs: Fix potential for tearing in ->remote_i_size and ->zero_point",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size. We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted.",
    "evidence": "osv:CVE-2026-64160",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.0.11",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-64160",
      "aliases": [
        "CVE-2026-64160"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9"
                },
                {
                  "fixed": "55970f238d495517edc961d55c44c772594d0969"
                },
                {
                  "fixed": "2c8f4742bb76117d735f92a3932d85239b16c494"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64160.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.18.0"
                },
                {
                  "fixed": "7.0.11"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64160.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.321160515Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494",
        "https://git.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64160.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-64160",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64160.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-64160",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516688,
  "published_at": "2026-07-19T15:40:47.063+00:00"
}