{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "281b59959707dfae03ce038cdf231bf4904e170c"
            },
            {
              "fixed": "5ad6d994255e27a3254079dfb50ca861fc31f2d0"
            },
            {
              "fixed": "3a926957cc95899ef88529710836edadc03c71a1"
            },
            {
              "fixed": "7b58c110b4e1f028eb38eec9ed3555e9be81c8b0"
            },
            {
              "fixed": "b77de3fceafbb39f30e4ff5dc986f863d5456417"
            },
            {
              "fixed": "d787d3ae96648dc14a3b7ca8fde817177e82c1c7"
            },
            {
              "fixed": "ad1f6d608f33f59d21a3d025615d6786a6443998"
            },
            {
              "fixed": "7d5b04290156c3fc316eecc86a4f9d201ab7d44a"
            },
            {
              "fixed": "3822743dc20386d9897e999dbb990befa3a5b3f8"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.131"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.80"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.21"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31447.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: reject mount if bigalloc with s_first_data_block != 0\n\nbigalloc with s_first_data_block != 0 is not supported, reject mounting\nit.",
  "id": "CVE-2026-31447",
  "modified": "2026-07-08T05:39:23.347240852Z",
  "published": "2026-04-22T13:53:43.467Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3822743dc20386d9897e999dbb990befa3a5b3f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a926957cc95899ef88529710836edadc03c71a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ad6d994255e27a3254079dfb50ca861fc31f2d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b58c110b4e1f028eb38eec9ed3555e9be81c8b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d5b04290156c3fc316eecc86a4f9d201ab7d44a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad1f6d608f33f59d21a3d025615d6786a6443998"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d787d3ae96648dc14a3b7ca8fde817177e82c1c7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31447.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31447"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ext4: reject mount if bigalloc with s_first_data_block != 0"
}