{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b657c95c11088d77fc1bfc9c84d940f778bf9d12"
            },
            {
              "fixed": "416d3e5f8a30ed04fe21ba7dc73c2841c3b56265"
            },
            {
              "fixed": "ed0f938f946f16b772e99cb8c277ab57828e5be4"
            },
            {
              "fixed": "83f6756a7b71adec0a41ae68e079a38906d59c6c"
            },
            {
              "fixed": "38c1ef7ce50eb4af0f89038b8aba12396ddb9233"
            },
            {
              "fixed": "d837068eefbc2651fe5789bf75a0f945710f7b8e"
            },
            {
              "fixed": "2174c68f623b74bd8690a4a6a4a52882d8ac3dc3"
            },
            {
              "fixed": "3bfeb436d4be6a2beb56cab344770e93e6b07260"
            },
            {
              "fixed": "7ebc672fab7a76e1e47e0f2fc1ee48118d27fde4"
            }
          ],
          "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-2026-72159.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: reject non-inline dinodes with i_size and zero i_clusters\n\nOn a volume mounted without OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC, a\nnon-inline regular file with non-zero i_size and zero i_clusters is\nstructurally malformed: the extent map declares no allocated clusters yet\nthe size header claims content exists.  Keep rejecting that shape, but\nexpress it through a shared predicate so the same invariant is available\nto normal inode reads and online filecheck.\n\nThe same zero-cluster shape is also malformed for non-inline directories. \nocfs2 directory growth allocates backing storage before advancing i_size,\nand ocfs2_dir_foreach_blk_el() later walks until ctx-\u003epos reaches\ni_size_read(inode).  A forged directory dinode with a huge i_size and no\nclusters would repeatedly fail on holes while advancing through the\nclaimed size.\n\nSparse regular files remain exempt: on sparse-alloc volumes, truncate can\nlegitimately grow i_size without allocating clusters.  System inodes and\ninline-data dinodes also retain their separate storage rules.\n\nMirror the check in ocfs2_filecheck_validate_inode_block() as well. \nfilecheck reports through its own error namespace, so malformed\nsize/cluster state is logged as a filecheck invalid-inode result rather\nthan via ocfs2_error(), but it must not proceed into\nocfs2_populate_inode().",
  "id": "CVE-2026-72159",
  "modified": "2026-08-18T03:31:09.649515078Z",
  "published": "2026-08-15T05:53:28.205Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2174c68f623b74bd8690a4a6a4a52882d8ac3dc3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38c1ef7ce50eb4af0f89038b8aba12396ddb9233"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bfeb436d4be6a2beb56cab344770e93e6b07260"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/416d3e5f8a30ed04fe21ba7dc73c2841c3b56265"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ebc672fab7a76e1e47e0f2fc1ee48118d27fde4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83f6756a7b71adec0a41ae68e079a38906d59c6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d837068eefbc2651fe5789bf75a0f945710f7b8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed0f938f946f16b772e99cb8c277ab57828e5be4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72159.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72159"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ocfs2: reject non-inline dinodes with i_size and zero i_clusters"
}