ntfs: take invalidate_lock in ntfs_setattr_size()

{
  "id": "5b838475c04250e625e027dd2486abceea84ee2a3ff7cf368706bbfd2bbe8bb3",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-99102",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ntfs: take invalidate_lock in ntfs_setattr_size()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ntfs: take invalidate_lock in ntfs_setattr_size() ntfs_setattr_size() updates i_size and resizes the on-disk attribute without holding mapping->invalidate_lock. Page faults take the lock shared, so a fault racing the resize can resolve a VCN against the transient runlist state of ntfs_non_resident_attr_expand() and fail with a spurious SIGBUS, and can interleave with the size-change epilogue (truncate_pagecache(), i_size_write(), pagecache_isize_extended()). Take invalidate_lock exclusively around the whole resize after inode_dio_wait(), matching the fallocate path and other filesystems such as xfs, which wraps truncate in its mmaplock (= invalidate_lock).",
    "evidence": "cve:CVE-2026-99102",
    "products": [
      {
        "name": {
          "value": "Linux",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "Linux",
          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-99102",
      "aliases": [
        "CVE-2026-99102"
      ],
      "metrics": [],
      "affected": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "9c87959601e80b39a45250e362e6ddfec17cb0fa",
              "lessThan": "f0b0738ba95731eeafd11352c74f8b48951f67dc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9c87959601e80b39a45250e362e6ddfec17cb0fa",
              "lessThan": "9cc5761b8f28f9cef72061094eb5e37e2cd44d97",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/ntfs/file.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.2.13",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/ntfs/file.c"
          ],
          "defaultStatus": "affected"
        }
      ],
      "modified": "2026-10-28T10:34:17.224Z",
      "provider": "cve",
      "references": [
        "https://git.kernel.org/stable/c/f0b0738ba95731eeafd11352c74f8b48951f67dc",
        "https://git.kernel.org/stable/c/9cc5761b8f28f9cef72061094eb5e37e2cd44d97"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "shortName": "Linux",
          "dateUpdated": "2026-10-28T10:34:17.224Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-99102",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-cve",
  "document_id": 425345,
  "published_at": "2026-10-28T10:34:17.224+00:00"
}