{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b657c95c11088d77fc1bfc9c84d940f778bf9d12"
            },
            {
              "fixed": "2e3aac33988ef4e4170141db8e995693ea38357c"
            },
            {
              "fixed": "fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f"
            },
            {
              "fixed": "157d31ef45038d89cd19620105e082d43c8e41e0"
            },
            {
              "fixed": "a5b555bcabbb0aff8745ad181768eaf9d964c1ee"
            },
            {
              "fixed": "82afe13558354390d8a592a5334d5f4fd72c0e5c"
            },
            {
              "fixed": "4db3b6a2a8ecf2a89d26a4090ace4072c6fad050"
            },
            {
              "fixed": "b858f2d57cfc9d57ce61b86051d603dc0ebccd40"
            },
            {
              "fixed": "5366a017099c6a3c443be908a05f26fd72af12a1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.29"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72160.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: reject dinodes with non-canonical i_mode type\n\nPatch series \"ocfs2: harden inode validators against forged metadata\", v2.\n\nThis series adds three structural checks to OCFS2 dinode validation so\nmalformed on-disk fields are rejected before ocfs2_populate_inode() copies\nthem into the in-core inode.\n\nThe checks cover:\n\n  - i_mode values whose type bits do not name a canonical POSIX file\n    type;\n  - non-device dinodes whose id1.dev1.i_rdev field is non-zero; and\n  - non-inline dinodes that claim non-zero i_size while i_clusters is\n    zero, covering directories unconditionally and regular files on\n    non-sparse volumes.\n\nThe normal read path reports these through ocfs2_error(), matching the\nexisting suballoc-slot, inline-data, chain-list, and refcount checks.  The\nonline filecheck path uses the same structural predicates but keeps its\nown reporting contract, returning OCFS2_FILECHECK_ERR_INVALIDINO instead\nof calling ocfs2_error().\n\n\nThis patch (of 3):\n\nocfs2_validate_inode_block() currently accepts any non-zero i_mode value. \nocfs2_populate_inode() then copies that mode verbatim into inode-\u003ei_mode\nand dispatches on i_mode \u0026 S_IFMT to the file/dir/symlink/special_file\niops; an unrecognised type falls through to ocfs2_special_file_iops and\ninit_special_inode().\n\nReject dinodes whose type bits do not name one of the seven canonical\nPOSIX file types.  Use fs_umode_to_ftype(), the same generic file-type\nconversion helper OCFS2 already uses for directory entries, so the\naccepted inode type set matches the kernel file-type vocabulary instead of\nopen-coding a local switch.\n\nApply the same structural check to the online filecheck read path. \nfilecheck keeps its own error namespace, so it reports malformed i_mode\nthrough the filecheck logger and OCFS2_FILECHECK_ERR_INVALIDINO instead of\ncalling ocfs2_error(), but it must not allow a malformed dinode to proceed\ninto ocfs2_populate_inode().",
  "id": "CVE-2026-72160",
  "modified": "2026-08-18T03:30:52.377312073Z",
  "published": "2026-08-15T05:53:28.943Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/157d31ef45038d89cd19620105e082d43c8e41e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e3aac33988ef4e4170141db8e995693ea38357c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4db3b6a2a8ecf2a89d26a4090ace4072c6fad050"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5366a017099c6a3c443be908a05f26fd72af12a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82afe13558354390d8a592a5334d5f4fd72c0e5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a5b555bcabbb0aff8745ad181768eaf9d964c1ee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b858f2d57cfc9d57ce61b86051d603dc0ebccd40"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fb024ea29f6cb1f01745e5f2e31646f3acb9aa6f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72160.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72160"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ocfs2: reject dinodes with non-canonical i_mode type"
}