ntfs: fail attrlist updates when the superblock is inactive

{
  "id": "c1f67dd0a13fd4e57a66040a3bb293081252c732961826f786dc800f49e87e2e",
  "url": "https://osv.dev/vulnerability/CVE-2026-72189",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ntfs: fail attrlist updates when the superblock is inactive",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ntfs: fail attrlist updates when the superblock is inactive generic_shutdown_super() clears SB_ACTIVE before evicting cached inodes. If eviction selects the fake inode for a base inode's unnamed $ATTRIBUTE_LIST attribute, ntfs_evict_big_inode() drops the fake inode's reference on the base inode while the fake inode is still hashed and marked I_FREEING. That iput can synchronously write back the base inode. The writeback path may update mapping pairs and call ntfs_attrlist_update(), which unconditionally calls ntfs_attr_iget() for the same $ATTRIBUTE_LIST fake inode. VFS then finds the I_FREEING inode and waits for eviction to finish, but the current task is still inside that eviction path, causing a self-deadlock in find_inode(). Fix this by mirroring the teardown guard used by __ntfs_write_inode(): once SB_ACTIVE has been cleared, do not try to iget the attribute-list fake inode. Return -EIO so teardown aborts the update instead of waiting on the inode it is evicting.",
    "evidence": "osv:CVE-2026-72189",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-72189",
      "aliases": [
        "CVE-2026-72189"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "495e90fa334828d4119061e2726af51d0a0fb4ed"
                },
                {
                  "fixed": "d5379035355c0dcb1e92a2544d40f48441e1d637"
                },
                {
                  "fixed": "0ebe8f625ab0520217a425d7cd366e4670484941"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72189.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72189.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.702071120Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0ebe8f625ab0520217a425d7cd366e4670484941",
        "https://git.kernel.org/stable/c/d5379035355c0dcb1e92a2544d40f48441e1d637",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72189.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-72189",
        "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/2026/72xxx/CVE-2026-72189.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-72189",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517122,
  "published_at": "2026-08-15T05:53:50.373+00:00"
}