{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f35590ee26f5722bfe12cdff14396c4c057a8f74"
            },
            {
              "fixed": "cfe246b318106e1691bd6c9466c739e8559d25c2"
            },
            {
              "fixed": "e37a75bb866c29da954b51d0dd7670406246d9ee"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71309.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: fix deadlock in ni_read_folio_cmpr\n\nSyzbot reported a task hung in ni_readpage_cmpr (now ni_read_folio_cmpr).\nThis is caused by a lock inversion deadlock involving the inode mutex\n(ni_lock) and page locks.\n\nScenario:\n1. Task A enters ntfs_read_folio() for page X. It acquires ni_lock.\n2. Task A calls ni_read_folio_cmpr(), which attempts to lock all pages in\n   the compressed frame (including page Y).\n3. Concurrently, Task B (e.g., via readahead) has locked page Y and\n   calls ntfs_read_folio().\n4. Task B waits for ni_lock (held by A).\n5. Task A waits for page Y lock (held by B).\n   -\u003e DEADLOCK.\n\nThe fix is to restructure locking: do not take ni_lock in ntfs_read_folio().\nInstead, acquire ni_lock inside ni_read_folio_cmpr() ONLY AFTER all required\npage locks for the frame have been successfully acquired. This restores the\ncorrect lock ordering (Page Lock -\u003e ni_lock) consistent with VFS.\n\n[almaz.alexandrovich@paragon-software.com: ni_readpage_cmpr was renamed to ni_read_folio_cmpr]",
  "id": "CVE-2025-71309",
  "modified": "2026-07-08T05:36:33.474069055Z",
  "published": "2026-05-27T12:15:03.360Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfe246b318106e1691bd6c9466c739e8559d25c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e37a75bb866c29da954b51d0dd7670406246d9ee"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71309.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71309"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "fs/ntfs3: fix deadlock in ni_read_folio_cmpr"
}